自考题库
首页
所有科目
自考历年真题
考试分类
关于本站
游客
账号设置
退出登录
注册
登录
出自:海船船员证
关于锅炉蒸汽带水,下列说法中错误的是()。
A:工作压力越高,对锅水含盐量的限制越应严格
B:锅炉负荷增大则蒸汽带水量增加
C:锅炉运行中汽包中水位始终高于水位计水位
D:蒸汽空间高度越大则蒸汽带水越少
The order of importance in addressing damage control on a ship is().
A:control flooding,control fire,repair structural damage
B:restore vital services,control fire,control flooding
C:control fire,restore vital services,control flooding
D:control fire,control flooding,repair structural damage
In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be ().
A:superheated
B:saturated
C:condensed
D:convected
操舵时应避免用(),以防止引起舵设备的损坏。
A:大于极限舵角的舵角
B:压舵
C:跑舵
D:急舵
船舶在均匀水流中顺流掉头的漂移距离为:().
A:流速×掉头时间×80%
B:流速×掉头时间×60%
C:流速×掉头时间×40%
D:流速×掉头时间×20%
The owner is not at liberty to leave the port of call as soon as the time specified in the charter-party has elapsed,though the Charterer may,if the contract so provides,be liable to compensate()for the delay.
A:the shipper
B:the owner
C:the consignor
D:the consignee
顺时针旋转的大型空气涡旋是()。
A:北半球反气旋、南半球气旋
B:南、北半球的反气旋
C:北半球气旋、南半球反气旋
D:南、北半球的气旋
When checking the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery,the atmosphere must be sampled().
A:one meter from the tank bottom and one meter below the tank top
B:one half the ullage of the tank and one meter below the tank top
C:one half the ullage of the tank and one meter above the tank bottom
D:at three meter intervals from the tank top
You must take good care of the drainage cock of the air control systemBecause () leads scale formed which might malfunction the pilot control valve and other instruments.
A:the temperature
B:the rust
C:the pressure
D:the humidity
四冲程柴油机中(),活塞从下死点运动到上死点,工质在气缸内被压缩。
A:进气过程
B:压缩过程
C:作功过程
D:排气过程
根据我国《海商法》规定,以下说法正确的是规定了承运人签发提单的份数().
A:正本
B:副本
C:正本和副本
D:以上说法均有不正确
可供海船使用的搜寻模式中()是用于单船/单飞机搜寻的一种方式。
A:扇形搜寻
B:平行搜寻
C:扩展方形搜寻
D:海空协同搜寻
失火报警信号发出后,人员应在5分钟内到达现场。
对于给定的船舶,船速相同时,转速越低,推力();转速相同时,船速越低,推力()。
A:越小;越大
B:越小;越小
C:越大;越小
D:越大;越大
下列物标中,()是不能用作雷达定位的物标。
A:小岛
B:雷达应答标
C:平缓的沙滩岸线
D:岬角
()refers to the angle between true north and the heading line of the ship.
A:True position
B:True meridian
C:True course
D:True bearing
由于主机的额定转速比较(),故在轴带发电机与主机轴之间设置()齿轮传动机构。
A:高/减速
B:低/增速
C:高/增速
D:低/减速
根据规定,进入曾充注惰性气体或长期封闭的舱室前,含氧量应()。
A:不高于1%
B:不低于5%
C:不低于19.5%
D:不高于18%
In describing basic diesel engine operation,the term ‘event’ refers to ()
A:the production of high pressure gases
B:the removal of expended combustion gases
C:the admission of air to the cylinder
D:all of the above
试分析电液舵机转舵速度过慢的原因。
The purpose of the ISM Code is to provide () standard for the safe management and operation of ships and for pollution prevention.
A:a regional
B:the best
C:an international
D:an ideal
Which information must automatic identification systems (AIS) automatically provide to appropriately equipped shore stations,vessels and aircraft? ()
A:Vessel's type
B:Vessel's course
C:Navigational status
D:All of the above
The ship has a diesel engine()a supercharger.
A:with
B:of
C:on
D:over
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。
A:外圈/活塞杆
B:内、外圈/活塞杆
C:外圈/填料函
D:内、外圈/填料函
High-velocity fog().
A:is a finer,more diffuse water spray than low-velocity fog
B:requires that the water pressure be no greater than 60 psi
C:produces an effective fog pattern no more than 6 feet beyond the nozzle
D:extinguishes a fire by absorbing heat and reducing the supply of oxygen
以下()易腐货物在运输途中不需要通风。
A:鲜蛋
B:冻牛肉
C:蔬菜
D:水果
曲轴发生扭转疲劳断裂后,在裂纹扩展区的裂纹纹理呈()。
A:圆形波纹状
B:放射状
C:网状
D:龟裂状
作为系泊船,为防止出现浪损,应:() Ⅰ加强值班Ⅱ收起舷梯Ⅲ收紧系缆,备好碰垫Ⅳ加抛外档短链锚以增加系泊的稳定度
A:Ⅰ~Ⅲ
B:Ⅱ~Ⅳ
C:Ⅰ、Ⅲ、Ⅳ
D:Ⅰ~Ⅳ
互见中,两帆船从相反航向上驶近,构成碰撞危险,应:()
A:各向右转
B:各向左转
C:右舷受风船让左舷受风船
D:左舷受风船让右舷受风船
要了解有关冰的术语、冰区操作、冰区导航等冰区航行知识,可查阅().
A:英版《世界大洋航路》
B:英版《无线电信号表》
C:英版《航路指南》
D:英版《航海员手册》
首页
<上一页
124
125
126
127
128
下一页>
尾页