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【单选题】

干船坞的主体部分是以下哪一部分?()

A.
坞室
B.
坞口
C.
灌排水系统
D.
拖曳系缆设备
题目标签:干船坞船坞主体
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参考解析:
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【单选题】To swim across the English Channel takes at least nine hours. It’s a hard work and it makes you short of breath. To fly over the Channel takes only twenty minutes, but it’s an expensive way to travel....

A.
not more expensive to be built than a bridge
B.
not more expensive to be built than a rail
C.
. cheaper to be built than a rail
D.
not cheaper to be built than a bridge

【单选题】当前学校教育要把学生作为教育活动和发展的主体,就要做到( )

A.
学生单一主体
B.
教师单一主体
C.
教师主导学生主体
D.
教师与学生双主体

【单选题】()是各级政协组织的主体。

A.
人大代表
B.
政协委员
C.
党代表
D.
职工代表