问题
单项选择题
高压离心式注水泵机组的低油压保护是当润滑油系统的总油压低于（）时，轴承润滑不好，电动机自动跳闸。
A、O.OlMPa
B、0.02MPa
C、0.06MPa
D、0.03MPa
答案
参考答案：D
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高压离心式注水泵机组的低油压保护是当润滑油系统的总油压低于（）时，轴承润滑不好，电动机自动跳闸。
A、O.OlMPa
B、0.02MPa
C、0.06MPa
D、0.03MPa
参考答案：D
| 完形填空。 This is __1__ bedroom. It's a nice room. You can see a bed, two __2__, a chair and a baseball on the floor. What __3__ see on the wall? You can see __4__ and a kite on the wall. You can also (还) see a window __5__ wall. Where's __6__ light (灯)? It's on __7__ table. Some plants are on the table, __8__. Where __9 __ his pencil-box and books? They're on the other (另一个) table. You can see a clock __10_ it. Under the chair is his baseball. It's a nice bedroom. | ||||
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