试述旋风式选粉机锁风的重要性。

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问题问答题简答题

试述旋风式选粉机锁风的重要性。

答案

参考答案：

锁风不良，将造成旋风筒锥底漏风，使收尘效率下降，影响选粉效率。合格的产品不能分离导致过粉磨现象，影响台时产量，增加电耗

填空题

用所给词的适当形式填空。

1. Half the boys in my class ______ (like) playing basketball.

2. The mother asked his son ______ (not ride) too quickly on the way to school. It's dangerous.

3. If you exercise every day, you ______ (be) healthy.

4. What will happen if Lucy ______ (bring) her friends from other school to the party?

5. He is a difficult man ______ (communicate) with.

判断题

调概准备工作越早实施越好。