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单选题
在无流海域，冰山的漂移速度约为风速的（）
A
1/2
B
1/3
C
1/10
D
1/50
参考答案
参考解析
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单选题人力船、帆船为确保自身安全，航行中应采取下列哪些行动？（）。①不得抢越机动船的船头或在航道上停桨流放；②不得驶进机动船刚刚驶过的余浪中去；③不得在狭窄、弯曲、滩险航段、桥梁水域和船闸引航道妨碍机动船的安全行驶。A
①②B
①③C
②③D
①②③
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单选题某螺旋桨半径为2m，在其中一桨叶上0.3R、0.6R、0.9R处各旋转36°时分别测得量杆的升程为256mm、252mm、260mm，请问其0.3R处的局部螺距为（）。A
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2560mmC
252mmD
1780mm
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单选题我国海商法规定，船舶不符合约定的适航状态或者其他状态而不能正常营运（）的，对因此而损失的营运时间，承租人不付租金。A
达到12小时B
超过12小时C
连续满24小时D
累计满24小时
考题
单选题If your bridge-to-bridge radiotelephone ceases to operate，you must（）.A
immediately anchor your vessel and arrange for repairs to the systemB
moor your vessel at the nearest dock available and arrange for repairs to the systemC
arrange for the repair of the system to be completed within 48 hoursD
exercise due diligence to restore the system at the earliest practicable time
考题
单选题External and internal leakage in hydraulic systems may be caused by （）.A
unusual vibrationB
excessive worn partsC
abnormal pressureD
any of the above
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单选题It is the responsibility of the Master or person in charge of a ship to ensure that（）.A
the station bill is posted in each compartmentB
temporary personnel and visitors are advised of emergency stationsC
names of crew members are listed on the station billD
no changes are made to the station bill
考题
单选题船体总纵弯曲力矩沿船长方向的分布规律为弯曲力矩值向首尾两端（）A
逐渐增加B
逐渐减少C
保持不变D
变化无规律
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