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【单选题】
大地水准面有几个?A.
1个
B.
2个
C.
5个
D.
无数个
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反馈参考答案：
举一反三
【简答题】同义句转换。 1. People tell me how I can get to the station. People tell me how ______ ______ ______ the station. 2. Mike didn't see anybody enter the building before ten. Nobody ______ ______ ______ ______...
【简答题】若离心泵的()安装高度()允许安装高度,在操作中会发生气蚀现象。
【简答题】离心泵安装在水面上,开启离心泵之前应先___________,目的是为了防止___________现象的发生;若离心泵的安装高度超过允许安装高度时,离心泵会发生__________现象,。
【单选题】How can people eat smart according to the speaker?
A.
Knowing what to eat.
B.
Knowing how to eat.
C.
Choosing nourishing foods.
D.
All of the above.
【简答题】同义句转换。 1. People tell me how I can get to the station. People tell me how ________________ the station. 2. Mike didn't see anybody enter the building before ten. Nobody _______________ the building be...
【简答题】若离心泵的（）安装高度大于允许安装高度，在操作中会发生气蚀现象。
【简答题】根据要求完成句型转换。 1. People tell me how I can get to the station. People tell me how ______ ______ ______ the station. 2. Mike didn't see anybody enter the building before ten. Nobody ______ ______ ______ _...
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