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单选题
Proper dispersion of fuel in a diesel engine cylinder is dependent upon the （）
A
injection pressure
B
shape of combustion space
C
turbulence in combustion space
D
all of the above
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单选题Low compression pressure in a diesel engine can be caused by（）A
improperly seating intake valvesB
leaking cylinder liner seal ringsC
late fuel injection timingD
carbon deposits on the piston
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单选题Which statement is TRUE concerning hawser towing? （）A
The catenary in a hawser should be sufficient so that the hawser just touches the bottomB
The hawser is of sufficient length for towing when taut between tug and towC
Increasing speed usually increases the catenary in the hawserD
Shortening the tow hawser generally decreases the maneuverability of the tug
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单选题（）, so they are widely used on board ship nowadays.A
Diesel engines have more advantages in comparison with gasoline enginesB
Diesel engines have more advantages in comparison to gasoline enginesC
Gasoline engines have more advantages in comparison with diesel enginesD
Gasoline engines have more advantages in comparison to diesel engines
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仅仅是ⅢB
Ⅰ+ⅢC
Ⅱ+ⅢD
Ⅰ～Ⅲ
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单选题水线以下的船舷侧进水属于下列哪类情况的进水（）。A
舱室顶部水密且位于水线以下，船体破损后整个舱室充满水B
舱室顶部在水线以上，舱内与舷外水不相通，水未充满整个舱室C
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A，B和C都不是
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能减弱波浪对船体的冲击，并能保持较高的航速B
能减弱波浪对船体的冲击，并能保持较低的航速C
能增强波浪对船体的冲击，并能保持较高的航速D
能增强波浪对船体的冲击，并能保持较低的航速
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单选题构成对遇局面的条件是（）。 （1）二艘机动船 （2）两船航向相反或接近相反 （3）两船致有构成碰撞危险 （4）两船航迹向相反A
（1）、（2）是B
（2）、（3）是C
（3）、（4）是D
（1）、（2）、（3）是
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单选题A semisubmersible which flops between forward and aft angles of trim is likely to have（）.A
KML less than KGLB
an off-center LCGC
LCG greater than LCBD
KML greater than KMT
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subject forB
liable toC
easy to meetD
always encounter
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Strands，yarns，circumferenceB
Strands，wires，diameterC
Wires，yarns，diameterD
Strands，circumference，wires
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air being warmed above the dew pointB
saturation of cold air by rainC
a rapid cooling of the air near the surface of the Earth at nightD
warm moist air being blown over a colder surface
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