题目内容

What did your classmates advise you when you said you got nervous easily while you were being tested?

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What will the traffic policeman tell you to do if you jaywalk?

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关于浮子式物位计下列说法正确的是

A. 恒浮力物位计
B. 变浮力物位计
C. 可用于测量料位
D. 液位越高，浮力越大

关于浮筒式液位计正确的是

A. 恒浮力液位计
B. 变浮力液位计
C. 可用于检测料位
D. 只用于现场液位指示