If the needle valve in a fuel injection nozzle sticks open

【名词&注释】

螺旋桨(propeller)、减速器(reducer)、弹性联轴器(elastic coupling)、离合器(clutch)

[单选题]If the needle valve in a fuel injection nozzle sticks open （）.

A. no fuel will be delivered through the nozzle
B. the nozzle will overheat and crack
C. time of injection will change
D. fuel will leak into the drain line

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学习资料：

[单选题]间接传动的轴系除船轴及其轴承外，还有（）部件。Ⅰ.螺旋桨；Ⅱ.离合器^(clutch)；Ⅲ.弹性联轴器；Ⅳ.艉轴管装置；Ⅴ.减速器。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅱ＋Ⅳ
C. Ⅰ＋Ⅱ＋Ⅲ
D. Ⅱ＋Ⅲ＋Ⅴ

[单选题]油润滑艉轴承的长度应不小于（）倍的艉轴直径。

A. 2
B. 3
C. 4
D. 5

[单选题]In order to ensure the safety of the ship and its equipment during UMS operation, certain essential functions （）.

A. must be provided
B. may be provided
C. have provided
D. can be provided

[单选题]With （）, the corrosion problems are much reduced in a central cooling system.

A. no equipment in contact with sea water
B. less equipment in contact with fresh water
C. more equipment in contact with sea water
D. less equipment in contact with sea water

[单选题]A Kort nozzle is a(n)（）.

A. hollow tube surrounding the propeller used to improve thrust
B. nozzle attached to a firefighting hose
C. intake valve on a diesel engine
D. piston cylinder on a diesel engine

[单选题]Cross scavenging requires the fitting of （） to prevent air or exhaust gas escape when the piston is at the top of the stroke.

A. a exhaust valve
B. a piston skirt
C. a piston crown
D. an air suction valve

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