问题
单项选择题
离心式压缩机推力盘与推力块之间的空隙应()固定组件与转动组件之间的最小轴向间隙。
A.大于
B.小于
C.等于
D.无法确定
答案
参考答案:B
离心式压缩机推力盘与推力块之间的空隙应()固定组件与转动组件之间的最小轴向间隙。
A.大于
B.小于
C.等于
D.无法确定
参考答案:B
完形填空。 | ||||
This is Center Street. Center Street is a great place to have 1 . There are 2 shops on it. It is a very 3 street. If you want to 4 , you can go to the video arcade. It is 5 from the big supermarket. There is also a new park 6 the supermarket. It is 7 and quiet. You can 8 your lunch in it. If you want to see 9 , you can go to the movie house. It is 10 the supermarket and the park. | ||||
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