抛绳火箭的有效期为:
A.一年
B.二年
C.三年
船舶因运载碱性及其他腐蚀物品而引起火灾,应用()灭火剂效果好。
A.水和沙土
B.沙土和泡沫
C.水和泡沫
船舶照明系统接地故障表现为照明线路的绝缘值电阻小于0.5MΩ或等于零,常采用______进行检查,方法是将故障线路分为前后两段,测量各自的绝缘值电阻,找出有接地故障的那一段,逐步进行,把故障点的范围逐渐缩小。
A.挑担灯法
B.对分法
C.通电法
D.断电法
一般情况下,将毛巾浸湿并折四折捂住口鼻,即可过滤掉%的烟气,且可保护呼吸道粘膜免受灼伤。
A.50
B.60
C.80
D.90
在不计恒定(固定)自差外,一般标准罗经自差大于 ,操舵罗经自差大于 ,需要进行自差校正。
A.±1°,±3°
B.±3°,±5°
C.±5°,±3°
D.±5°, ±1°
船舶设置舭龙骨的作用是______。
A.增加横摇阻力
B.减少船舶横摇
C.A和B
D.减小固有横摇周期
在救生艇上的淡水是按额定乘员每人配备:
A.1.5升
B.2.5升
C.3升
D.1升
血液循环可分为体循环和肺循环,他们之间是______。
A.不相通的
B.部分相通
C.相通的
在发电机组不可控复励的励磁系统中,复励是指______。
A.反映发电机端电压的并激绕组实现自励,反映负载电流的串激绕组实现复励
B.反映端电压的串激绕组实现自励,反应负载电流的并激绕组实现复励
C.反映端电压的并激绕组实现复励,反应负载电流的串激绕组实现自励
D.反映端电压的串激绕组实现复励,反应负载电流的并激绕组实现自励
Gasoline fuel tank vents should terminate ______.
A.In the engine compartment
B.In the fuel tank space
C.Above or outside the hull
D.At the most convenient location
Inmarsat-F站的数据56/64kbit/s传输业务识别码的前两位数是_____。
A.87
B.76
C.60
D.85
How should you signal the crane operator to lower the boom?______.
A.With arm extended and fingers closed, point thumb downward
B.With arm extended downwards and forefinger pointing down, move hand in small horizontal circles
C.Extend arm with the palm down, and hold this position rigidly
D.With hands clasped in front of your body
A、Ⅰ对
B、Ⅱ对
C、Ⅰ或Ⅱ
D、Ⅲ对
海上求生过程中,应保持救生艇筏在难船附近海面等待救援,以增加获救。
此题为判断题(对,错)。
国际压载水管理证书要进行______才能取得和保持有效。
A.年度检验、期间检验、入级检验、设备检验
B.年度检验、期间检验、设备检验、初次检验
C.初次检验、年度检验、期间检验、换证检验
D.年度检验、设备检验、期间检验、定期检验
空气瓶及管系的密封性试验从充气达到工作压力后起算24h内压力降不大于工作压力的______。
A.3%
B.4%
C.5%
D.6%
Where there has been unjustifiable deviation, the Shipowner can not claim the contractual rate of freight payable under the charter-party, but may ________ to a reasonable sum if the goods are carried to their destination safely.
A.entitle
B.be entitled
C.be entitling
D.entitles
Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?
A.Leaking seal ring
B.Insufficient heat transfer from the exhaust valves
C.Blocked cooling water passages to the head
D.Excessive scavenging air provided to the engine
A.船名、姓名、职位、应急编号
B.各种应变部署中的岗位、任务
C.船长姓名
According to this passage, if the cylinder non-return valve were not leaky
A.an explosion would not be caused
B.there still would be a danger of explosion
C.oil would not deposit in the air pipe
D.pipe lines would not have to be drained
国际压载水管理证书的有效期限应由主管机关规定,不得超过:_________
A.三年
B.四年
C.五年
D.长期
Any person maintaining a listening watch on a bridge to bridge radio-telephone must be able to ______.
A.Speak English
B.Speak Spanish
C.Send Morse code
D.Repair the unit
在大洋海图上磁差的资料给出在_____。
A.罗经花
B.标题栏内
C.等磁差曲线图上
D.B+C
船长下达弃船命令后,无线电员须在电台值守,按规定发送遇险电文,直至通知撤离。其间隔与演习间隔相同。
此题为判断题(对,错)。
A、等于/乘积数
B、等于/和数
C、大于/乘积数
D、小于/和数
此题为判断题(对,错)。
In terms of vessel manning,a watch is the ______.
A.direct performance of deck or engine operations in a scheduled and fixed rotation
B.performance of maintenance work necessary for the vessel's safe operation,on a daily basis
C.performance of lookout duties
D.direct performance of cargo loading and discharge operations only
此题为判断题(对,错)。
A.进气阀
B.排气阀
C.活塞环
D.气缸套
A、2道向前翻边,2道向后翻边
B、3道向后翻边,1道向前翻边
C、4道均向后翻边
D、1道向后翻边,3道向前翻边
降落伞火箭信号与红光火焰信号相比,具有能见距离远,求救效果好的特点。
此题为判断题(对,错)。
A.垃圾槽
B.油孔、油槽
C.上、下瓦结合面
D.瓦面
Your tanker is fully loaded,and you find that she is down slightly by the head.To adjust the trim,you may ______.
A.Add ballast aft
B.Load more cargo aft
C.Shift cargo aft
D.All of the above
A、计算船舶成本的主要依据/验船师签字
B、计算船舶折旧的依据/验船师签字
C、编制帐单的主要依据/双方签字
D、计算船舶年营运支出的依据/厂方及验船师签字
在开敞锚地锚泊时,轮机长应与船长协商的内容是______。
A.备车待命
B.主机停车待命
C.是否按航行时值班
D.必须抛双锚
A Doppler log in the bottom return mode indicates the ______.
A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
A、某缸高压油泵柱塞卡死在最高位置
B、某缸喷油器针阀卡死在关闭位置
C、某缸高压油泵柱塞套筒磨损严重
A、Ⅰ+Ⅱ+Ⅳ
B、Ⅱ~Ⅴ
C、Ⅰ~Ⅳ
D、Ⅱ+Ⅳ+Ⅴ
The chief officer has the responsibility for ______.
A.supervising the handling of cargo
B.the upkeep of the ship and her equipment
C.supervising the handling of cargo and the upkeep of the ship
D.supervising the handling of cargo and the upkeep of deck equipment
船进坞需要修理水舱时,通过______放净舱底水。
A.海底阀门
B.船底塞
C.舱底水泵
D.污水泵
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