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【简答题】
法律上的；合法的 a. L_ _ _ _
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皮皮学刷刷变学霸
举一反三
【单选题】UMS are mainly unattended overnight and during this time the ________ should have control of the main engine.
A.
chief engineer
B.
engineer on cabin watch
C.
bridge officer on watch
D.
master
【单选题】UMS are mainly unattended overnight and during this time ____ should have control of the main engine
A.
the chief engineer
B.
the engineer on cabin watch
C.
the bridge officer on watch
D.
the master
【单选题】UMS are mainly unattended overnight and during this time main engine should have control of the ________
A.
the chief engineer
B.
the engineer on cabin watch
C.
the bridge officer on watch
D.
the master
【简答题】按磁路的结构形式不同，点火线圈可分为开磁路点火线圈和闭磁路点火线圈两种。目前在独立电子点火系统中应用最广泛的是（）。
【简答题】发病期指症状出现后病害进一步发展的时期。是病征出现时期,通常又称( )。
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