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出自:海船船员证
华南沿海、菲律宾及附近洋面冬季盛行()。
A:北风
B:东北风
C:西北风
D:西南风
航行中要认真逐一核对灯浮的()。
A:形状、颜色、灯质
B:颜色、灯质、顶标、编号
C:形状、颜色、灯质、顶标、编号
D:颜色、形状、射程、编号
水管锅炉后排的沸水管比烟管炉的烟管换热效果好是因为()。
A:辐射换热所占比例大
B:烟气横向冲刷管束
C:烟气流速较高
D:B+C
某负载两端的电压和流过的电流分别u=141sin314tV,i=4.24sin(314t-30°)A,该电路消耗的功率为()。
A:300W
B:260W
C:500W
D:600W
船舶靠码头操纵之前,应掌握的港口信息包括:() Ⅰ航道信息Ⅱ泊位信息Ⅲ交通信息Ⅳ气象信息
A:Ⅰ、Ⅱ
B:Ⅰ、Ⅲ、Ⅳ
C:Ⅱ~Ⅳ
D:Ⅰ~Ⅳ
船舶旋回中,首尾线上漂角为零的点在:().
A:转心处
B:重心处
C:转心处
D:船尾处
船舶在大量卸货过程中,若保持重心高度不变,问卸货后的初稳性高度比卸货前的是()。
A:增大
B:减小
C:不变
D:不确定
The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the().
A:deck
B:head of the boom
C:heel of the boom
D:mast or king post
冷藏集装箱在船上堆装时,其制冷机组一端应保持朝向()方向,以防止海浪的冲击和侵入。
A:船首
B:船尾
C:船舶左舷
D:船舶右舷
How should you signal the crane operator to move slowly?().
A:Use one hand to give any miotion signal , and place the other hand motionless in front of the hand giving the motion signal
B:Extend arm with the thumb pointing up , and flex the fingers in and out for as long as the load movement is desired
C:First tap your elbow with one hand , and then proceed to use regular signals
D:First tap the top of your head with your first , and then proceed to use regular signals
对于SMS的建立与运行,()的表述有误。
A:SMS在船上的预运行通常仅在公司选定的最具代表性的一艘船上进行
B:如公司运营的船舶类型不止一种,则每种均应选定一艘具有代表性的船舶预运行SMS
C:SMS试运行通常仅在公司选定的最具代表性的一艘或数艘船上进行
D:SMS正式运行将在公司所有船上进行
With reference to rules governing steering gear, which one of the following rules is incorrect? ()
A:It is required that all ships are provided with two independent steering gear systems that is one main and one auxiliary
B:The auxiliary gear could be power operated in passenger ships
C:The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speed
D:All moving parts of the steering gear must be guarded against any possible damage
()process the distress signal from EPIRB to determine its position and identity.
A:COSPAS-SARSAT
B:Ground receiving stations
C:storing distress signal
D:Near-polar orbiting satellites
对辅锅炉燃烧器中风门挡板的开度调节方法,
不正确
的描述是()。
A:采用伺服电动机或电磁铁进行调节
B:采用伺服电动机可以进行风门开度连续调节
C:采用电磁铁只能进行风门大、小两档调节
D:点火时应将风门开至最大
Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine ()
A:slightly less than the line frequency
B:the same as the line frequency
C:slightly greater than the line frequency
D:All of the above
A preferred-channel buoy will show a().
A:white light whose characteristic is Morse (A)
B:group-occulting white light
C:composite group-flashing (2 + 1) white light
D:composite group-flashing (2 + 1) red or green light
通常,当气缸套磨损量超过()时,燃烧室就会失去密封性(D为缸径)。
A:0.1%~0.2%
B:0.2%~0.4%
C:0.3%~0.6%
D:0.4%~0.8%
Which of the following statements is true concerning simple parallel resistance circuits?()
A:The total current flow equals the sum of the individual currents
B:The total current flow equals the reciprocal of the sum of the individual currents
C:The total resistance equals the sum of the individual resistance
D:The total voltage equals the sum of the individual voltages across each resistance
()是碳酸氢钠加硬脂酸铝、云母粉、石英粉或滑石粉等粉状物。它本身无毒,不腐蚀,不导电。它灭火迅速,效果好,但成本高。
A:二氧化碳
B:1211
C:干粉
D:大量水
4SOLAS公约规定,一般货船的机动救生艇在载足乘员和属具时,在静水中前进的航速至少为()。
A:6节,且应备足连续24小时运转的燃料
B:6节,且应备足连续48小时运转的燃料
C:4节,且应备足连续24小时运转的燃料
D:4节,且应备足连续48小时运转的燃料
Which will most likely occur when entering shallow water? ()
A:Rudder action will become more effective
B:The vessel's list will change
C:The vessel's trim will change
D:An increase in speed will occur
船舶主机的传送效率的通常值为:()
A:0.95~0.98
B:0.80~0.95
C:0.60~0.75
D:0.50~0.70
船舶的抗沉性主要研究的是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:舱室顶部位于水线以上,舱内与舷外水相通
D:A,B和C都不是
表示西太平洋副热带高压面积指标为()。
A:700hPa上588线所包围的区域
B:500hPa上588线所包围的区域
C:500hPa上最外围闭合等压线包围的区域
D:850hPa上588线所包围的区域
按集装箱的()可以将其分为杂货箱、通风箱、冷藏箱等。
A:结构
B:大小
C:用途
D:主体部件使用材料
制冷剂在压缩机进口和出口通常是()和()。
A:湿蒸气/饱和蒸气
B:饱和蒸气/过热蒸气
C:湿蒸气/过热蒸气
D:过热蒸气/过热蒸气
根据船期表营运的船舶是()
A:COA
B:航次期租
C:定期船
D:不定期船
在狭水道中,本船和目标船机动频繁,这时()
A:ARPA不再显示PPC或PAD
B:由于破坏了ARPA对PPC、PAD的计算准则,因而造成画面杂乱,报警频繁
C:ARPA因PPC和PAD失效而不能正常工作
D:ARPA图像与在开阔海域时一样
已知某轮两柱间长Lbp=120m,宽B=17m,水线面面积为1650m
2
,则其水线面积系数为CW为()。
A:0.72
B:0.65
C:0.58
D:0.81
The sub-multiple prefix “micro” means ().
A:thousandth (10 to the-3rd power)
B:millionth (10 to the-6th power)
C:billionth (10 to the-9th power)
D:trillionth (10 to the-12th power)
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