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【判断题】
离心泵输送液体密度增加时,流量增大,扬程不变。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】测验的效度是指测验的可靠性，即多次测验分数的稳定和一致程度。（ ）
【简答题】9÷______=0.75= 21 () =______：36．
【简答题】576里面有______个36．
【简答题】比______多25%的数是36．比______少25%的数是36．
【简答题】（ 1 2 - 1 6 ）× 1 6 ×36．
【单选题】What is NOT a requirement of the reinspection for a tank barge with a certificate of inspection valid for two years?
A.
The reinspection will be made between the fourteenth and sixteenth months
B.
The inspector shall examine all accessible parts of the vessels’s hull
C.
The inspector shall examine the vessel’s machinery as well as equipment
D.
The scope of the reinspection shall be the same as for the inspection for certification，but in less detai
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