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【单选题】
▁▁是人类道德体系的基本原则,是一种传统的高尚的人类伦理原则,也是海员道德的首要原则。A.
爱国主义原则;
B.
集体主义原则;
C.
自有主义原则;
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反馈参考答案：
举一反三
【单选题】腘动脉的正常解剖分支为
A.
分为胫前、胫后动脉，由胫前动脉分出腓动脉
B.
分为胫前、胫后动脉，由胫后动脉分出腓动脉
C.
分为胫前、腓动脉，由胫前动脉分出胫后动脉
D.
直接分为胫前、胫后和腓动脉
E.
分为胫前、腓动脉，由腓动脉分出胫后动脉
【单选题】Which system(s) in the hydraulic systems of crane always hold(s) single side of load?
A.
hoisting system only
B.
hoisting system and luffing system
C.
hoisting system and slew and slewing system
D.
slewing system only
【单选题】For a balanced three-phase △ -connected load, the average power absorbed by the load is P . Change the △ -connected load to Y-connected load, the power will :
A.
remain the same
B.
increase to P
C.
increase to P
D.
increase to 3 P
【单选题】The vessel’s load line certificate is always issued by ____.
A.
The register of shipping
B.
custom house
C.
cargo survey bureau
D.
maritime safety administration
【单选题】The load on the crosshead pin is always ______, so it is the ______ half of the bearing which is subject to wear.
A.
upwards / top
B.
upwards / bottom
C.
downwards / top
D.
downwards / bottom
【单选题】下列关于胫前动脉和足背动脉的描述,错误的是
A.
压迫胫前动脉，其止血的范围是整个足部
B.
胫前动脉发自腘动脉
C.
胫前动脉的血供范围是小腿前群肌
D.
其体表投影为：胫骨粗隆与腓骨小头连线中点至足背内、外踝连线的中点为胫前动脉；自足背内、外踝连线中点至第1、2跖趾关节间的连线为足背动脉
E.
在内、外踝连线中点向深部压迫足背动脉，可止血
【单选题】The vessel’s Load Line Certificate is always issued by （）.
A.
The Register of Shipping
B.
Customs House
C.
Cargo Survey Bureau
D.
Maritime Safety Administration
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