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【单选题】
高压验电器一般每()试验一次。
A.
1个月
B.
6个月
C.
3个月
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参考解析:
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举一反三
【单选题】Mike failed to finish his homework on time, so he tried to avoid _______ his teacher.
A.
meet
B.
to meet
C.
to meeting
D.
meeting
【单选题】He tried to avoid ______ my questions in class.
A.
to answer
B.
answering
C.
having answered
D.
to have answered
【单选题】在送出境旅游团时,待旅游团( )才可离开。
A.
到达机场
B.
办理登机手续
C.
办理行李托运手续
D.
进入隔离区
【单选题】在送出境旅游团时,待旅游团()后,地陪才可离开。
A.
到达机场
B.
办理登机手续
C.
办理行李托运手续
D.
进入隔离区
【简答题】在送出境旅游团时,待旅游团( )后,地陪才可离开。
【单选题】已知四棱锥 的底面是边长为6的正方形,侧棱 底面 ,且 ,则该四棱锥的体积是(  )
A.
288
B.
96
C.
48
D.
144
【单选题】已知正四棱锥 的侧棱长与底面边长都相等, 是 的中点, 则 所成的角的余弦值为
A.
B.
C.
【单选题】He tried to avoid ___ my question.
A.
to answer
B.
answering
【单选题】He tried to avoid________my questions in class.
A.
to answer
B.
answering
C.
to have answered
D.
having answered
【判断题】在社交场所,可按照先尊后卑或先近后远的顺序依次递送名片。( )
A.
正确
B.
错误
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