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【单选题】
— We took a taxi and arrived at the station an hour earlier. — You ____ a taxi. Time was enough for you to go there by bus. [ ]A.
needn't take
B.
needn't to take
C.
needn't have taken
D.
don't need take
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【单选题】产品在规定的条件下和规定时间内，完成规定功能的概率称为 ，丧失规定功能的概率为 （ ）
A.
可靠性累积；故障概率
B.
可靠性；不可靠度
C.
可靠度故障；概率密度
D.
可靠度；累积故障概率
【简答题】(1) If your ager is talking about taking a year away from the classroom between high school and college, you may have Malia Obama to thank for that. But if they ́re not yet talking about whether t...
【简答题】阅读下面短文，然后按要求写一篇150词左右的英语短文。 My husband received a letter a month ago a young woman who had been his student when she was in middle school. She was writing because she wanted to thank for having a grea...
【单选题】产品在规定的条件下和规定时间内，完成规定功能的概率称为______，丧失规定功能的概率为______。( )
A.
可靠性累积；故障概率
B.
可靠性；不可靠度
C.
可靠度故障；概率密度
D.
可靠度；累积故障概率
【简答题】产品在规定的条件下和规定时间内，完成规定功能的概率称为（ ），丧失规定功能的概率为（ ）。
【简答题】(1) If your ager is talking about taking a year away from the classroom between high school and college, you may have Malia Obama to thank for that. But if they ́re not yet talking about whether t...
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