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【单选题】
一般讲，如果开环系统增加积分环节，则其闭环系统的相对稳定性将（）A.
变好
B.
变坏
C.
不变
D.
不定
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【简答题】构成机构的要素是 和 ;构件是机构中的 单元体,而零件是机器中的 单元体。
【简答题】组 成 机 构 的 要 素 是 和 ; 构 件 是 机 构 中 的 单 元 体
【单选题】Jenny suggested our going on an outing to the countryside next weekend, but the rest didn’t sound very _________ about the idea.
A.
anxious
B.
enthusiastic
C.
cautious
D.
secure
【单选题】Jenny suggested______ with parents before making the decision.
A.
discuss
B.
discussing
C.
discussion
【单选题】听力原文：W: Can you help me? The battery is dead. M: I'll be right with you. W: I just had it fixed. I can't understand why it happened again. What does the woman mean?
A.
She can't wait for service.
B.
She loves her car dearly.
C.
She's annoyed with the frequent breakdown.
D.
She'll have to change the battery herself.
【简答题】Tom suggested that we __________such a meeting, but Jenny insisted
that it _________of great importance.A. not
hold ; should be B. didn't
hold ; be C. hold
; was D. not
hold ; was
【简答题】构件是机构中的 单元体。
【简答题】构件是机构中的 单元体，而零件是机器中的 单元体。
【单选题】Jenny suggested our going on an outing to the countryside next weekend, but the rest didn’t sound very _________ about the idea.
A.
enthusiastic
B.
cautious
C.
anxious
D.
secure
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