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单选题
电刷镀镀层沉积速度快，生产率高是因为（）所致。Ⅰ.镀前零件表面清洁彻底；Ⅱ.两极有相对运动；Ⅲ.电解液离子浓度高；Ⅳ.电解液温度低；Ⅴ.电流密度大。
A
Ⅰ＋Ⅱ＋Ⅲ＋Ⅴ
B
Ⅲ＋Ⅴ
C
Ⅱ＋Ⅲ
D
Ⅰ＋Ⅱ＋Ⅳ＋Ⅴ
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更多 “单选题电刷镀镀层沉积速度快，生产率高是因为（）所致。Ⅰ.镀前零件表面清洁彻底；Ⅱ.两极有相对运动；Ⅲ.电解液离子浓度高；Ⅳ.电解液温度低；Ⅴ.电流密度大。A Ⅰ＋Ⅱ＋Ⅲ＋ⅤB Ⅲ＋ⅤC Ⅱ＋ⅢD Ⅰ＋Ⅱ＋Ⅳ＋Ⅴ” 相关考题
考题
单选题The port gang way caught on a（）on the wharf and was severely damaged.A
bollardB
bittC
stemD
keel
考题
单选题以下关于在各种不同法律地位的海峡里的航行权，表述有误的是（）。A
对于内海海峡，各国船舶只有经过沿海国的批准才能通过B
对于非国际航行的领海海峡，各国船舶有绝对的自由航行权C
对于国际航行的非领海海峡，各国船舶有完全的自由航行权D
对于国际航行的领海海峡，在这类海峡中航行适用“过境通行权”
考题
单选题采用凸轮式的多回路时间继电器进行燃烧时序控制的辅锅炉，点火过程中由于点火失败而停炉报警，此时该控制器会（）。A
自动回到起始位置B
停转保持在原位置C
自动回到开始点火位置D
自动回到预扫风结束位置
考题
单选题The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to（）.A
one-half the SWL of the main towing hawserB
three-fourths the SWL of the main towing hawserC
that of the main towing hawserD
twice that of the main towing hawser
考题
单选题Which of the listed bearing types is an example of a solid bearing?（）A
Piston wrist pin bushingB
turbine bearingC
Spring bearingD
Diesel engine main bearing
考题
单选题The amount of LFG that may be loaded into a given tank is determined by（）.A
checking the loading sheetB
loading to within 1 percent of outageC
loading to within 10 percent of the safety relief valve settingD
filling to the maximum level indicated on the liquid level gaging device
考题
单选题船舶开航前二副应做好哪些工作？（）I、对船舶缺陷的处理符合港口当局的要求；II、提前检测航海仪器和声光系统；III、将开航情况向船长报告A
I、IIIB
I、IIC
I、II、IIID
II、III
考题
单选题The main steering gear must be able to steer the ship at maximum ahead service speed and be capable at this speed, and at the ships deepest service draught, of putting the rudder from 35 degrees on one side to 30 degrees on the other side within no （）.A
more than 28 secondsB
more than 60 secondsC
less than 28 secondsD
less than 60 seconds
考题
单选题Which of the following represents the emergency signal for fire aboard ship?（）A
More than six short blasts and one long blast on the whistleB
Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarmC
Three short blasts of the whistle supplemented by the same signal on the general alarmD
More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm
考题
单选题We still do not know （）.A
where is the troubleB
where does the troubleC
where the trouble liesD
what is the trouble
考题
单选题液舱测深孔在舱长中点前部，测深时船舶首倾，则所测得的空档高度（）。A
大于舱内液面的平均空档高度B
小于舱内液面的平均空档高度C
等于舱内液面的平均空档高度D
与舱内液面平均空档高度的关系不能确定
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