1450转/分的风机振动值一般不允许超过0.08mm。
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During the winter months,the southeast trade winds are().
A. stronger than during the summer months
B. weaker than during the summer months
C. drier than during the summer months
D. wetter than during the summer month
自动空气开关具有过载、短路和欠电压保护。
A. 正确
B. 错误
对吸毒人员进行人身检查时,检查民警可以是多少人?()
A. 4人
B. 2人
C. 3人
D. 1人