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丹東市2022~2023學(xué)年度上學(xué)期期末教學(xué)質(zhì)量監(jiān)測高一數(shù)學(xué)一、選擇題:本題共8小題,每小題5分,共40分.在每小題給出的四個(gè)選項(xiàng)中,只有一項(xiàng)是符合題目要求的.1.設(shè)全集SKIPIF1<0,集合SKIPIF1<0滿足SKIPIF1<0,則()A.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】C【解析】【分析】由條件求出集合SKIPIF1<0,進(jìn)而求解.【詳解】因?yàn)镾KIPIF1<0,SKIPIF1<0,所以SKIPIF1<0.故選:C.2.有一筆統(tǒng)計(jì)資料,共有10個(gè)數(shù)據(jù)如下:90,92,92,93,93,94,95,96,99,100,則這組數(shù)據(jù)的SKIPIF1<0分位數(shù)為()A.92 B.95 C.95.5 D.96【答案】D【解析】【分析】根據(jù)百分位數(shù)的定義求解即可.【詳解】因?yàn)镾KIPIF1<0,則這組數(shù)據(jù)的SKIPIF1<0分位數(shù)為該組數(shù)據(jù)的第8個(gè),即為96.故選:D.3.已知冪函數(shù)SKIPIF1<0的圖象經(jīng)過點(diǎn)SKIPIF1<0,則SKIPIF1<0在定義域內(nèi)()A.單調(diào)遞增 B.單調(diào)遞減 C.有最大值 D.有最小值【答案】B【解析】【分析】現(xiàn)根據(jù)冪函數(shù)的定義,求得SKIPIF1<0,進(jìn)而求解.【詳解】設(shè)SKIPIF1<0,則SKIPIF1<0,所以SKIPIF1<0,即SKIPIF1<0,則函數(shù)SKIPIF1<0的定義域?yàn)镾KIPIF1<0,且在定義域內(nèi)單調(diào)遞減,沒有最大值和最小值.故選:B.4.函數(shù)SKIPIF1<0值域?yàn)椋ǎ〢.SKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】A【解析】【分析】令SKIPIF1<0,求出SKIPIF1<0的范圍,根據(jù)指數(shù)函數(shù)的單調(diào)性即可求解.【詳解】依題意,令SKIPIF1<0,則SKIPIF1<0,因?yàn)镾KIPIF1<0單調(diào)遞減,且SKIPIF1<0所以SKIPIF1<0,所以SKIPIF1<0SKIPIF1<0.故選:A.5.設(shè)函數(shù)SKIPIF1<0,則下列函數(shù)中為奇函數(shù)的是()ASKIPIF1<0 B.SKIPIF1<0 C.SKIPIF1<0 D.SKIPIF1<0【答案】A【解析】【分析】分別求出選項(xiàng)的函數(shù)解析式,再利用奇函數(shù)的定義即可得選項(xiàng).【詳解】由題意可得SKIPIF1<0,對于A,SKIPIF1<0是奇函數(shù),故A正確;對于B,SKIPIF1<0不是奇函數(shù),故B不正確;對于C,SKIPIF1<0,其定義域不關(guān)于原點(diǎn)對稱,所以不是奇函數(shù),故C不正確;對于D,SKIPIF1<0,其定義域不關(guān)于原點(diǎn)對稱,不是奇函數(shù),故D不正確.故選:A.6.神舟十二號載人飛船搭載三名宇航員進(jìn)入太空,在中國空間站完成了為期三個(gè)月的太空駐留任務(wù),期間進(jìn)行了很多空間實(shí)驗(yàn),目前已經(jīng)順利返回地球,在太空中水資源有限,要通過回收水的方法制造可用水,回收水是將宇航員的尿液,汗液和太空中的水收集起來,經(jīng)過特殊的凈水器處理成飲用水,循環(huán)使用.凈化水的過程中,每增加一次過濾可減少水中雜質(zhì)SKIPIF1<0,要使水中雜質(zhì)減少到原來的SKIPIF1<0以下,則至少需要過濾的次數(shù)為(參考數(shù)據(jù)SKIPIF1<0)()A.3 B.4 C.5 D.6【答案】B【解析】【分析】設(shè)過濾的次數(shù)為SKIPIF1<0,原來水中雜質(zhì)為1,得到不等式SKIPIF1<0,解出即可.【詳解】設(shè)過濾的次數(shù)為SKIPIF1<0,原來水中雜質(zhì)為1,則SKIPIF1<0,即SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0的最小值為4,則至少要過濾4次.故選:B.7.已知正數(shù)SKIPIF1<0,SKIPIF1<0滿足SKIPIF1<0,則SKIPIF1<0的最小值為()A.10 B.9 C.8 D.7【答案】B【解析】【分析】整理可得SKIPIF1<0,根據(jù)基本不等式“1”的活用,計(jì)算即可得答案.詳解】由SKIPIF1<0,可得SKIPIF1<0,所以SKIPIF1<0,當(dāng)且僅當(dāng)SKIPIF1<0,即SKIPIF1<0,SKIPIF1<0取等號,所以SKIPIF1<0的最小值為9.故選:B.8.若偶函數(shù)SKIPIF1<0在SKIPIF1<0上單調(diào)遞增,且SKIPIF1<0,則不等式SKIPIF1<0解集是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0【答案】A【解析】【分析】根據(jù)偶函數(shù)的性質(zhì),結(jié)合分類討論思想進(jìn)行求解即可.【詳解】因?yàn)镾KIPIF1<0是偶函數(shù),所以由SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),由SKIPIF1<0,因?yàn)镾KIPIF1<0在SKIPIF1<0上單調(diào)遞增,所以SKIPIF1<0,或SKIPIF1<0,而SKIPIF1<0,所以SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),由SKIPIF1<0,因?yàn)镾KIPIF1<0在SKIPIF1<0上單調(diào)遞增,所以SKIPIF1<0或SKIPIF1<0,而SKIPIF1<0,所以SKIPIF1<0,故選:A二、選擇題:本題共4小題,每小題5分,共20分.在每小題給出的選項(xiàng)中,有多項(xiàng)符合題目要求.全部選對的得5分,部分選對的得2分,有選錯(cuò)的得0分.9.設(shè)SKIPIF1<0,SKIPIF1<0是兩個(gè)隨機(jī)事件,則下列說法正確的是()A.SKIPIF1<0表示兩個(gè)事件至少有一個(gè)發(fā)生BSKIPIF1<0表示兩個(gè)事件至少有一個(gè)發(fā)生C.SKIPIF1<0表示兩個(gè)事件均不發(fā)生D.SKIPIF1<0表示兩個(gè)事件均不發(fā)生【答案】ACD【解析】【分析】根據(jù)隨機(jī)事件的表示方法,逐項(xiàng)判斷即可.【詳解】因?yàn)镾KIPIF1<0,SKIPIF1<0是兩個(gè)隨機(jī)事件,所以SKIPIF1<0表示兩個(gè)事件至少有一個(gè)發(fā)生,故A正確;SKIPIF1<0表示兩個(gè)事件恰有一個(gè)發(fā)生,故B錯(cuò)誤;SKIPIF1<0表示兩個(gè)事件均不發(fā)生,故C正確;SKIPIF1<0表示兩個(gè)事件均不發(fā)生,故D正確.故選:ACD.10.在SKIPIF1<0中,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0分別是SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的中線且交于點(diǎn)SKIPIF1<0,則下列結(jié)論正確的是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0【答案】BCD【解析】【分析】根據(jù)三角形重心的性質(zhì),結(jié)合向量加法和減法法則進(jìn)行即可即可.詳解】依題意,如圖所示:因?yàn)镾KIPIF1<0,SKIPIF1<0,SKIPIF1<0分別是SKIPIF1<0,SKIPIF1<0,SKIPIF1<0的中線且交于點(diǎn)SKIPIF1<0,所以SKIPIF1<0是SKIPIF1<0的重心.對于A:若SKIPIF1<0,則SKIPIF1<0,因?yàn)镾KIPIF1<0,所以SKIPIF1<0,顯然不成立,故A錯(cuò)誤;對于B:SKIPIF1<0,故B正確;對于C:SKIPIF1<0SKIPIF1<0,故C正確;對于D:SKIPIF1<0SKIPIF1<0,故D正確.故選:BCD.11.若SKIPIF1<0,SKIPIF1<0,則下列不等式成立的是()A.SKIPIF1<0 B.SKIPIF1<0C.SKIPIF1<0 D.SKIPIF1<0【答案】AD【解析】【分析】根據(jù)不等式的性質(zhì)逐項(xiàng)判斷即可.【詳解】對于A,由SKIPIF1<0,則SKIPIF1<0,故A正確;對于B,SKIPIF1<0,由SKIPIF1<0,所以SKIPIF1<0,故B錯(cuò)誤;對于C,由SKIPIF1<0,可得SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0,故C錯(cuò)誤;對于D,SKIPIF1<0,由SKIPIF1<0,則SKIPIF1<0,即SKIPIF1<0,故D正確.故選:AD.12.已知定義在SKIPIF1<0上的函數(shù)SKIPIF1<0滿足SKIPIF1<0,且SKIPIF1<0,則下列選項(xiàng)正確的是()A.SKIPIF1<0 B.SKIPIF1<0的圖象關(guān)于直線SKIPIF1<0對稱C.SKIPIF1<0是偶函數(shù) D.SKIPIF1<0【答案】ABD【解析】【分析】由條件通過賦值判斷A,D,根據(jù)偶函數(shù)的定義及性質(zhì)判斷B,根據(jù)奇函數(shù)的定義判斷C.【詳解】因?yàn)镾KIPIF1<0,取SKIPIF1<0可得SKIPIF1<0,因?yàn)镾KIPIF1<0,取SKIPIF1<0可得SKIPIF1<0,故SKIPIF1<0,A正確;由已知SKIPIF1<0所以SKIPIF1<0,D正確;因?yàn)镾KIPIF1<0,所以函數(shù)SKIPIF1<0為偶函數(shù),所以函數(shù)SKIPIF1<0的圖象關(guān)于直線SKIPIF1<0對稱,所以函數(shù)SKIPIF1<0的圖象關(guān)于直線SKIPIF1<0對稱,B正確;由已知SKIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,故函數(shù)SKIPIF1<0為奇函數(shù),故C錯(cuò)誤;故選:ABD.三、填空題:本題共4小題,每小題5分,共20分.13.命題“SKIPIF1<0,SKIPIF1<0”的否定是______.【答案】SKIPIF1<0,SKIPIF1<0【解析】【分析】利用全稱命題的否定是特稱命題,直接寫出命題的否定即可.【詳解】命題“SKIPIF1<0,SKIPIF1<0”的否定是“SKIPIF1<0,SKIPIF1<0”.故答案為:SKIPIF1<0,SKIPIF1<0.14.現(xiàn)有7名世界杯志愿者,其中SKIPIF1<0,SKIPIF1<0,SKIPIF1<0通曉日語,SKIPIF1<0,SKIPIF1<0通曉韓語,SKIPIF1<0,SKIPIF1<0通曉葡萄牙語,從中選出通曉日語、韓語、葡萄牙語志愿者各一名組成一個(gè)小組,則SKIPIF1<0,SKIPIF1<0不全被選中的概率為______.【答案】SKIPIF1<0##0.75【解析】【分析】求得基本事件的總數(shù),利用列舉法求得事件SKIPIF1<0所包含的基本事件的個(gè)數(shù),求得SKIPIF1<0,結(jié)合對立事件,即可求得SKIPIF1<0.【詳解】由題意,選出通曉日語、俄語、韓語的翻譯人員各一人,包含下列樣本點(diǎn)SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,共有SKIPIF1<0種不同的選法,若SKIPIF1<0表示事件“B1,C1不全被選中”這一事件,則SKIPIF1<0表示“B1,C1全被選中”這一事件,由于SKIPIF1<0由SKIPIF1<0,共有3個(gè)樣本點(diǎn)組成,所以SKIPIF1<0,所以SKIPIF1<0.故答案為:SKIPIF1<0.15.已知函數(shù)SKIPIF1<0,當(dāng)函數(shù)SKIPIF1<0有且僅有三個(gè)零點(diǎn)時(shí),則實(shí)數(shù)SKIPIF1<0的取值范圍是______.【答案】SKIPIF1<0【解析】【分析】根據(jù)零點(diǎn)定義由已知可得函數(shù)SKIPIF1<0與SKIPIF1<0圖像有3個(gè)交點(diǎn),討論SKIPIF1<0,作函數(shù)SKIPIF1<0的圖象,結(jié)合圖象求SKIPIF1<0的取值范圍.【詳解】因?yàn)楹瘮?shù)SKIPIF1<0有且僅有三個(gè)零點(diǎn),所以方程SKIPIF1<0有且僅有三個(gè)根,所以方程SKIPIF1<0有且僅有三個(gè)根,即函數(shù)SKIPIF1<0與SKIPIF1<0圖像有3個(gè)交點(diǎn),當(dāng)SKIPIF1<0時(shí),作函數(shù)SKIPIF1<0和SKIPIF1<0的圖象如下:觀察圖象可得不存在滿足條件的SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),作函數(shù)SKIPIF1<0和SKIPIF1<0的圖象如下:又函數(shù)SKIPIF1<0圖象為對稱軸為SKIPIF1<0的拋物線,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,觀察圖象可得SKIPIF1<0時(shí),函數(shù)SKIPIF1<0與SKIPIF1<0圖像有3個(gè)交點(diǎn),所以SKIPIF1<0,故當(dāng)函數(shù)SKIPIF1<0有且僅有三個(gè)零點(diǎn)時(shí),實(shí)數(shù)SKIPIF1<0的取值范圍是SKIPIF1<0,故答案為:SKIPIF1<0.16.某班級在開學(xué)初進(jìn)行了一次數(shù)學(xué)測試,男同學(xué)平均答對17道題,方差為11,女同學(xué)平均答對12道題,方差為16,班級男女同學(xué)人數(shù)之比為3:2,那么全班同學(xué)答對題目數(shù)的方差為______.【答案】SKIPIF1<0【解析】【分析】設(shè)男同學(xué)人數(shù)為SKIPIF1<0,女同學(xué)人數(shù)為SKIPIF1<0,計(jì)算全班同學(xué)答對題目數(shù)的平均數(shù),再根據(jù)總體方差公式,計(jì)算總體方差即可.【詳解】依題意,設(shè)男同學(xué)人數(shù)為SKIPIF1<0,女同學(xué)人數(shù)為SKIPIF1<0,則全班同學(xué)答對題目數(shù)的平均數(shù)為:SKIPIF1<0,所以全班同學(xué)答對題目數(shù)的方差為:SKIPIF1<0.故答案為:SKIPIF1<0.四、解答題:本題共6小題,共70分.解答應(yīng)寫出文字說明,證明過程或演算步驟.17.已知實(shí)數(shù)SKIPIF1<0,SKIPIF1<0滿足SKIPIF1<0,SKIPIF1<0.(1)用SKIPIF1<0表示SKIPIF1<0;(2)計(jì)算SKIPIF1<0的值.【答案】(1)SKIPIF1<0(2)SKIPIF1<0【解析】【分析】根據(jù)對數(shù)的運(yùn)算法則及性質(zhì)求解即可.【小問1詳解】由題意可知SKIPIF1<0,所以SKIPIF1<0.【小問2詳解】因?yàn)镾KIPIF1<0,所以SKIPIF1<0.18.已知SKIPIF1<0,SKIPIF1<0是平面內(nèi)不共線的兩個(gè)向量,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,且SKIPIF1<0與SKIPIF1<0共線.(1)求SKIPIF1<0的值;(2)請用SKIPIF1<0,SKIPIF1<0表示SKIPIF1<0.【答案】(1)SKIPIF1<0(2)SKIPIF1<0【解析】【分析】(1)利用向量的運(yùn)算法則與共線定理,根據(jù)待定系數(shù)即可求解;(2)設(shè)SKIPIF1<0,分別代入SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,根據(jù)待定系數(shù)即可求解.【小問1詳解】依題意,因?yàn)镾KIPIF1<0,SKIPIF1<0,SKIPIF1<0所以SKIPIF1<0,SKIPIF1<0,又因?yàn)镾KIPIF1<0與SKIPIF1<0共線,所以SKIPIF1<0,即SKIPIF1<0.【小問2詳解】設(shè)SKIPIF1<0,則有SKIPIF1<0,即SKIPIF1<0所以SKIPIF1<0,解得SKIPIF1<0.所以SKIPIF1<0.19.甲、乙兩人進(jìn)行體育比賽,比賽共設(shè)三個(gè)項(xiàng)目,每個(gè)項(xiàng)目勝方得1分,負(fù)方得0分,沒有平局.三個(gè)項(xiàng)目比賽結(jié)束后,總得分高的人獲得冠軍.已知甲在三個(gè)項(xiàng)目中獲勝的概率分別為SKIPIF1<0,SKIPIF1<0,SKIPIF1<0(SKIPIF1<0),各項(xiàng)目的比賽結(jié)果相互獨(dú)立,甲得0分的概率是SKIPIF1<0,甲得3分的概率是SKIPIF1<0.(1)求SKIPIF1<0,SKIPIF1<0的值;(2)甲乙兩人誰獲得最終勝利的可能性大?并說明理由.【答案】(1)SKIPIF1<0,SKIPIF1<0(2)甲,理由見解析【解析】【分析】(1)根據(jù)獨(dú)立事件的概率公式進(jìn)行求解即可;(2)根據(jù)獨(dú)立事件的概率公式和概率加法公式進(jìn)行求解即可.【小問1詳解】因?yàn)镾KIPIF1<0,且SKIPIF1<0,解得SKIPIF1<0.【小問2詳解】甲得2分的概率SKIPIF1<0,所以甲得2分或3分的概率SKIPIF1<0,那么乙得2分或3分的概率為SKIPIF1<0所以甲獲得最終勝利的可能性大.20.已知函數(shù)SKIPIF1<0(SKIPIF1<0)在區(qū)間SKIPIF1<0上的最大值為SKIPIF1<0.(1)求SKIPIF1<0的值;(2)若SKIPIF1<0,SKIPIF1<0是函數(shù)SKIPIF1<0的兩個(gè)零點(diǎn),求SKIPIF1<0的值.【答案】(1)SKIPIF1<0(2)SKIPIF1<0【解析】【分析】(1)根據(jù)一元二次函數(shù)的對稱軸與單調(diào)性即可求解;(2)利用韋達(dá)定理即可求出SKIPIF1<0,再利用對數(shù)的運(yùn)算法則即可求解.【小問1詳解】根據(jù)SKIPIF1<0,由題意可知,拋物線的對稱軸方程為SKIPIF1<0.

因?yàn)楹瘮?shù)SKIPIF1<0在區(qū)間SKIPIF1<0上的最大值為SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0.【小問2詳解】因?yàn)楹瘮?shù)SKIPIF1<0的兩個(gè)零點(diǎn)為SKIPIF1<0,SKIPIF1<0,所以SKIPIF1<0,所以SKIPIF1<0.21.已知集合SKIPIF1<0,集合SKIPIF1<0.(1)求集合SKIPIF1<0;(2)若SKIPIF1<0是SKIPIF1<0的必要不充分條件,求實(shí)數(shù)SKIPIF1<0的取值范圍.【答案】(1)答案見解析(2)SKIPIF1<0【解析】【分析】(1)根據(jù)一元二次不等式的解法分類討論進(jìn)行求解即可.(2)先解分式不等式得到集合A,再根據(jù)必要不充分條件的性質(zhì)進(jìn)行求解即可.【小問1詳解】當(dāng)SKIPIF1<0時(shí),不等式的解為SKIPIF1<0或SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),不等式的解為SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),不等式的解為SKIPIF1<0或SKIPIF1<0,綜上所述:當(dāng)SKIPIF1<0時(shí),集合SKIPIF1<0或SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),集合SKIPIF1<0,當(dāng)SKIPIF1<0時(shí),集合SKIPIF1<0或SKIPIF1<0.【小問2詳解】集合SKIPIF1<0或SKIPIF1<0,因?yàn)镾KIPIF1<0是SKIPIF1<0的必要不充分條件,所以集合SKIPIF1<0是集合A的真子集,當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,所以SKIPIF1<0;當(dāng)SKIPIF1<0時(shí),不合題意;當(dāng)SKIPIF1<0時(shí),SKIPIF1<0,SKIPIF1<0無解;綜上,實(shí)數(shù)SKIPIF1<0的取值范圍為SKIPIF1<0.22.已知函數(shù)SKIPIF1<0是偶函數(shù).(1)求SKIPIF1<0的值;(2)設(shè)函數(shù)SKIPIF1<0(SKIPIF1<0),若SKIPIF1<0有唯一零點(diǎn),求實(shí)數(shù)SKIPIF1<0的取值范圍.【答案】(1)SKIPIF1<0(2)

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