出自:海船船员证

在电动主机遥控系统重复起动回路中,为提高发火转速,且增长两次起动时间间隔,其调整方法是()。
A:调电位器P3增大A同相端电压,且减小同相端输入电阻
B:调电位器P3增大A同相端电压,且增大同相端输入电阻
C:调电位器P3减小A同相端电压,且减小同相端输入电阻
D:调电位器P3减小A同相端电压,且增大同相端输入电阻
船壳外板的编号“PD8”表示()
A:左舷D8列板
B:右舷D列第8块板
C:右舷P列D行第8块板
D:左舷D列第8块板
When fighting an electrical fire, you should first ().
A:stop ventilation to the area
B:stop the vessel
C:secure electricity to the circuit
D:apply CO2 to the fire
艏端的加强可分为哪几个部分?
关于比例控制阀的以下说法中不正确的是()。
A:既可以开环控制,又可加反馈环节构成闭环控制
B:既可用于定值控制或开关控制,又可用于比例控制
C:既可做成力工作型,也可做成行程工作型
D:既有比例压力阀、比例流量阀,也有比例方向阀
在船上简报经常适用的场合不包括()
A:靠离泊前引水员上船后
B:通过狭水道和复杂水域前
C:船舶处于非常紧急情况时
D:航行中大风浪来临前
IMO规定,ARPA显示方式中哪种必须具备()
A:相对运动且北上
B:相对运动且首向上
C:真运协且北向上
D:真运动且航向向上
高速客船应在专用的码头上下旅客,如需使用非专用码头时,应经海事管理机构审核同意。
PSC官员进行检查应急发电机时,船上负责人员应特别熟悉()。 Ⅰ、应急发电机起动前必要的准备工作 Ⅱ、与起动能源合用,使用其他方式起动机器的可能性 Ⅲ、第一次起动失败后的程序 Ⅳ、第二次起动失败后的程序
A:Ⅰ+Ⅱ+Ⅳ
B:Ⅰ+Ⅱ
C:Ⅰ+Ⅱ+Ⅲ
D:Ⅰ+Ⅱ+Ⅲ+Ⅳ
活塞运动部件平台检验使用最多的量具是()。
A:外径干分尺
B:塞尺
C:钢尺
D:百分表
船舶在哪个航向上航行时,陀螺罗经的速度误差最大?()
A:045°
B:090°
C:180°
D:270°
整体式曲轴常见的失效形式有()。
A:轴颈磨损
B:轴颈腐蚀
C:皱纹及断裂
D:A+B+C
The self-contained breathing device should not be used in which situation().
A:Oxygen deficient spaces
B:Compartments containing poisonous vapors
C:Fighting fires that produce heavy smoke
D:Underwater search
The principal difference between loop scavenging and crossflow scavenging, as used in single acting diesel engines, is the ()
A:direction of air flow within the cylinder
B:sequence of port opening
C:method of opening exhaust ports
D:volume of air admitted to the cylinder
梁拱的取值范围一般在船宽的()之间。
A:1/200~1/100
B:1/150~1/80
C:1/100~1/80
D:1/100~1/50
当天体格林时角GHA>180°时,360°-GHA=()
A:天体地理位置的东经
B:天体地理位置的南纬
C:天体地理位置的西经
D:天体地理位置的北纬
()of the following need not be entered in the official logbook?
A:The testing of the internal combustion engine driven emergency generator at least once each month the vessel is navigated
B:The testing of storage betteries for emergency lighting and systems once each 6 months the vessels is navigated
C:The actual draft when the vessel arrives in salt water after department a port
D:The testing of the line-throwing appliance once every 3 months
符合《中华人民共和国海船船员适任考试、评估和发证规则》第八章“发证、职务签证及证书再有效”中关于签发适任证书规定的是()
A:按规定通过考试和评估者即可签发相应类别、等级和职务的适任证书
B:持有三副、三管轮适任证书者任职满12个月、体检合格可申请二副、二管轮适任证书
C:凡取得特殊培训合格证者,可申请将其原适任证书适用范围扩大至相应船舶的签证
D:只要提供主管机关认可的服务资历,即可申请适任证书再有效
如果摩擦副表面存在一层极薄的润滑油膜时,此时的摩擦称为()。
A:液体摩擦
B:干摩擦
C:边界摩擦
D:动摩擦
转舵油缸柱塞更换V型密封圈时,可借助()将其带出.
A:油缸油压
B:摩擦力
C:专用工具
D:螺丝刀
根据我国《海洋营运船舶明火作业安全技术要求》的规定,进行明火作业前,为确保安全,对不属于危险区域的舱室内,必须考查以作业点为中心,()米为半径的空间。
A:5
B:10
C:15
D:20
我国近海,年平均大风(风力≥8级)日数最多的海域是()
A:渤海
B:黄海
C:东海
D:南海
Free Radio Pratique will be granted by the Port Health Office in the following case () .
A:Vessel with a case or suspected case of infectious disease on board
B:Vessel with a dead body on board
C:Vessel which has visited plague-infected ports during the current voyage
D:Cargo vessel which hasn't called at any plague infected ports during the current voyage and on which there is not any case of infectious disease,or any dead body
An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard ship as a ().
A:magnetic amplifier
B:ship’s service alternator
C:three-wire DC generator
D:saturable core reactor
Of the following,()is not a wind.
A:Bora
B:Gust
C:Gregale
D:Floe
以下关于船舶发生碰撞,在应急阶段行动程序要点,表述有误的是()。
A:现场指挥应带领有关船员迅速查明碰撞的部位
B:立即对各液舱和污水沟井的液位进行测量,确定船体是否已破损进水以及进水情况
C:机舱应对由于碰撞而造成的主辅舵机等机电设备的损害立即作出评估和抢修
D:机舱应立即做好消防和弃船的准备工作
在风速5~40米/秒都能观测到的雾是()
A:平流雾
B:辐射雾
C:锋面雾
D:海上蒸汽雾
Ships equipped with Inmarsat SES send distress alerts both().
A:quick and good
B:convenient and certain
C:easily and simply
D:important and difficult
If the buoyant force on a ship’s hull is equal to the displacement tonnage,the ship will().
A:require ballast
B:be down by the head
C:sink
D:float
The temperature () a liquid changes its state from liquid to gas depends upon the liquid itself and upon the pressure () it is subjected in the containing vessel.
A:at which/to which
B:from which/at which
C:to which/from which
D:in which/on which