The operating diesel generators will have their exhaust temperatures, cooling water and lubricating oil temperatures and pressures () in much the same way as for the main engine.
A. to be kept
B. logged
C. changed
D. has remained
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油、气、水在储油构造中的分布规律是()
A. 顶部是油,中部是水,低部是气
B. 顶部是气,中部是油,低部是水
C. 顶部是油,中部是气,低部是水
D. 顶部是水,中部是油,低部是气
癌前疾病或癌前病变(precancerous disease or precancerous lesions)
1643年沙俄趁清廷北部边防空虚之机,派遣谁侵入我国边境?