正确答案: B

coolant

题目：Of a kind of liquid is used to cool the diesel engine, it is invariably called （）

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学习资料的答案和解析：

[单选题]对使用液压撑杆螺栓的正置式主轴承，因其一端顶在轴承盖上，另一端顶在机架上，所以在上紧贯穿螺栓之前，必须先（）的撑杆螺栓。

松开全部

[单选题]轴系理论中心线是船舶（）时所确定的轴系中心线。

设计

[单选题]当铁梨木艉轴承产生裂纹或开裂时，可采用（）方法修理。

换新或局部换新

[单选题]The cylinder and piston must be warmed up （） to a temperature of about 140 degF in standing by engine.

gradually

[单选题]The piston supporting body is mainly subjected to （） stress.

compressive

[单选题]Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.

lube oil vapors in the crank case

[单选题]The crankcase of many diesel engines are kept under a slight vacuum by the （）.

crankcase exhaust fa

[单选题]A diesel engine cooling water system with a pH factor of 30 indicates a condition of （）.

excessive acidity