[单选题]要求机座全部底脚螺栓中的（）以上的螺栓采用紧配螺栓，以防机座移位。

正确答案 ：B

B．15%

[单选题]艉轴承间隙一般是在距艉轴承后端面（）处所测的径向间隙。

正确答案 ：C

100mm

[单选题]A common trouble with the fuel pump plunger or fuel valve spindle is （）.

正确答案 ：C

oil leakage

[单选题]In addition to lubricating, cylinder oil assists in forming a gas seal and contains （） which clean the cylinder liner.

正确答案 ：A

additives

[单选题]The auxiliary engine and a cgenerator can be connected with （）.

正确答案 ：D

coupling

[单选题]The bed-plate is secured in the longitudinal direction by means of bolts known as （）.

正确答案 ：A

end-chock bolts

[单选题]The indications of a scavenge fire are excessive black smoke, （） and peeling from scavenge trunking.

正确答案 ：D

all above are right

[单选题]The most common contaminate of governor hydraulic fluid is （）.

正确答案 ：B

dirt

[单选题]Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.

正确答案 ：C

heat of compression

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