手选带式输送机的带速不得超过0.3m/s，倾角不得大于（）°。输送_爱下问搜题

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问题单项选择题

手选带式输送机的带速不得超过0.3m/s，倾角不得大于（）°。输送带宽度超过0.8m时，应当在两侧分别设手选台。

A.12

B.20

C.25

D.35

答案

参考答案：A

选择题

—Please go on with your demonstration．

—But where was I?

—Well, you_____the two chemicals together．

A．tried to mix

B．were trying to mix

C．were trying mixed

D．had tried to mix

选择题

The new library building _____ last week. [ ]

A. was completed

B. is completed

C. completed

D. has completed