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【简答题】
哪类属于高温高湿作业
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参考答案:
举一反三
【简答题】简述指标与标志的区别和联系。
【单选题】She said her brother () in Beijing. He () to Japan on business last week.
A.
wasn’t, went
B.
hasn’t, went
C.
wasn’t, go
D.
isn’t, went
【单选题】She said her brother ____ in Beijing. He ______ to Japan on business last week.
A.
hasn’t, went
B.
wasn’t, went
C.
wasn’t, would go
D.
would be, went
【简答题】标志与指标有什么区别和联系?
【判断题】设计一对渐开线直齿圆柱齿轮时,若实际中心距不等于标准中心距,采用变位齿轮可以实现无侧隙啮合。
A.
正确
B.
错误
【判断题】设计一对渐开线直齿圆柱齿轮时,若实际中心距不等于标准中心距,采用变位齿轮可以实现无侧隙啮合。
A.
正确
B.
错误
【单选题】九号可以从八号身上学习到什么?()
A.
追求和谐
B.
敢作敢当
C.
行动力强
D.
活泼、无忧无虑
【单选题】直流稳压电源中的滤波电路的作用是:
A.
将交流变为直流
B.
将高频变为低频
C.
将交、直流混合量中的交流成分滤除
D.
将交、直流混合量中的直流成分滤除
【单选题】She said her brother ____ in Beijing. He ______ to Japan on business last week.
A.
hasn’t, went
B.
wasn’t, went
C.
wasn’t, go
D.
isn’t, went
【单选题】She said her brother ____ in Beijing. He ______ to Japan on business last week.
A.
wasn’t, went
B.
hasn’t, went
C.
wasn’t, would go
D.
would be, went
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