碎煤机开机后机体无明显振动，振动值不应超过（）。A、0.1mm；B_爱下问搜题

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问题单项选择题

碎煤机开机后机体无明显振动，振动值不应超过（）。

A、0.1mm；

B、0.2mm；

C、0.3mm；

D、0.4mm。

答案

参考答案：A

选择题

我们要热爱生活、热爱人生，因为只有对生活充满热爱和激情，才能[ ]

①对生活中的事物感兴趣

②深刻具体地感受生活的美好

③发现生活中的情趣

④不断陶冶高雅生活情趣

A．①③④

B．①②③

C．②③④

D．①②③④

补全对话，情景问答

从方框中选出五个合适的句子补全对话。

A. What was John doing?
B. I was studying in the library.
C. I called the fire department.
D. No, but Meimei did.
E. Where were you, Dong?

Dong: Alice, what were you doing when the fire started?
Alice: 1.
Dong: Did you smell smoke?
Alice: 2.
Dong: Where was she?
Alice: She was playing in the gym.
Dong: 3.
Alice: He was eating lunch in the cafeteria. 4.
Dong: When the fire started, I was talking on the telephone.
Alice: What did you do?
Dong: 5.
Alice: Good for you!