【多选题】问卷调查法的不足之处在于( )。
C.
容易扭曲真实的工作情况,使得到的信息有失真实
【单选题】下列常规制造方法中属于等量制造的是( )
【单选题】呼吸阀挡板的作用是(),使罐内油气产生分层现象。
【单选题】The cooling water of diesel engine should be treated because the ___.
A.
cooling water is alkalescence
B.
cooling water has acidity
C.
cooling water has salinity
D.
cooling water has impurity
【单选题】Why the cooling water of the diesel engine should be treated? Because the ____.
A.
Cooling water is alkalescence
B.
cooling water is acidity
C.
cooling water has salinity
D.
cooling water has impurity
【单选题】Where is the cooling water from the compensating tank in the cooling water system of main engine lead to?
A.
discharge side of the centrifugal pump
B.
suction side of the centrifugal pump
C.
the lowest point of the cooling water system
D.
inlet of the main engine
【简答题】请根据你自身的测试结果,得出您的风格特征 ( ) 比较 O和S的分数。哪一个更加高?将分数高的填写在下面的横线上,并且圈出相应的字母 O (开放的) S (自足的) 比较 D和I的分数。哪一个更加高?将分数高的填写在下面的横线上,并且圈出相应的字母 D (直接的) I (间接的) 最终看看你的最终结果是以下哪个选项,进行选填提交( O+D=社交型 (长颈鹿) O+I=关系型 (...
【单选题】High diesel engine cooling water temperatures can be caused by ______.
A.
air in the cooling system
B.
an overhauled water pump
C.
correct amount of coolant
D.
no air in the cooling system