单选题()the morning from 0800 to 1200 chief officer is on duty.AOnBInCAtDDuring
单选题
()the morning from 0800 to 1200 chief officer is on duty.
A
On
B
In
C
At
D
During
参考解析
解析:
暂无解析
相关考题:
单选题通常在封缸运行时,采取必不可少的应急措施和考虑的因素是()。 Ⅰ.抬起喷油泵滚轮 Ⅱ.关闭喷油泵的进出口阀 Ⅲ.考虑柴油机振动 Ⅳ.考虑增压器喘振 Ⅴ.考虑排气温度 Ⅵ.考虑排气颜色AⅠ+Ⅱ+Ⅲ+Ⅳ+ⅤBⅠ+Ⅲ+Ⅳ+ⅤCⅠ+Ⅲ+Ⅳ+Ⅴ+ⅥDⅠ+Ⅱ+Ⅲ+Ⅳ+Ⅵ
单选题夜间,某机帆并用的在航船舶(船长大于50m)正在使用曳绳钓捕鱼,该船应显示的号灯为()。A舷灯、尾灯B前后桅灯、舷灯、尾灯,不对水移动时关闭C舷灯、尾灯、前后桅灯D上红下白环照灯、舷灯、尾灯,不对水移动时关闭舷灯、尾灯
单选题A towing hook may be released from the().Atug's engineroom or the bowBpilot house or aft steering stationCforecastleDtowing bitts by reaching over and releasing a lever
单选题If the engine () for a long period, there will be a danger of frost.Amust to stand inoperativeBhas to stand inoperativeCmust be stood idleDwill stand idle
单选题A vessel not under command making way at night would show().Atwo all-round red lights in a vertical lineBanchor lights and sidelightsCtwo all-round white lights in a vertical line,sidelights and a stern lightDtwo all-round red lights in a vertical line,sidelights,and a stern light
单选题The propeller is pushed on to the tubeshaft taper and made tight by()Aa mechanical sealBkeyway and keyCa nutDshrinkage
单选题Which of the following operating procedures should be carried out immediately after any diesel engine is started?()ATake all exhaust temperature readingBCheck the sump oil levelCVerify proper lube oil pressureDAll of the above
单选题对于额定电压为220V的日光灯,其起辉电压(点亮日光灯所需的最低电压)和熄灭电压(熄灭日光灯所需的最高电压)通常是()左右。A200V和200VB200V和100VC100V和200VD100V和100V
单选题At the required fire drill conducted aboard a vessel, all person must report to their stations and demonstrate their ability to perform the duties assigned to them().Aby the toolpusherBin the station billCby the person conduction the drillDat the previous safety meeting
单选题()forms over land,most frequently during autumn and winter over low-lying land,especially if it is damp and marshy and in valleys on quiet nights with clear skies.AFRONTAL FOGBMIXING FOGCADVECTION FOGDRADIATION FOG
单选题船舶和燃油供给单位应当将燃油样品妥善保存()A18个月B2年C6个月D1年