[单选题]对于活塞杆下端是方形法兰的机型如B&W，如只需解体活塞杆填料函则不需吊出活塞，在曲轴箱内拆掉填料函的（）固定螺栓，用专用夹具夹住（），使整个填料函落在夹具的平板上，进行解体。

正确答案 ：B

内、外圈/活塞杆

[单选题]双桨双舵船舶，两舵系中心线的前后定位偏差与相互位置偏差均不得超过（）。

正确答案 ：B

5～10mm

[单选题]If the engine does start on air, but combustion does not immediately begin, the cause may be （）.

正确答案 ：D

the turning gear still engaged

[单选题]The crankshaft of diesel engine is supported by （）.

正确答案 ：D

main bearing

[单选题]The engine is reversed by axial displacement of the camshafts In order for this to be carried out, the cams are （） with inclined transition faces.

正确答案 ：B

shaped

[单选题]The main bearing metal is a lining （）.

正确答案 ：A

inside the bearing

[单选题]The main bearings are provided with thin-walled （）, lined with a copper-lead alloy.

正确答案 ：B

steel shells

[单选题]The linear motion of a diesel engine piston is converted to the rotary motion required to drive gears, propeller shafts, and generators by the （）.

正确答案 ：B

crankshaft

[单选题]Load control on a diesel engine is accomplished by （）.

正确答案 ：B

rotating the fuel injector pump plunger

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