蛇胆川贝液用于痰湿停滞导致的咳嗽痰多，胸脘胀闷，恶心呕吐。()

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问题判断题

答案

参考答案：错

选择题

They ________ to enter the building by the back door; however, the front door was locked.

A．are supposed

B．aren’t supposed

C．weren’t supposed

D．were supposed

判断题

煤矿井下电力系统不允装自动重合闸和负荷定量器。