党风廉政建设“两个责任”是指党委主体责任和纪委监督责任。
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A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?（）.
A. When dead in the water，it is often difficult to find the neutral position and slight headway or sternway may result
B. When going directly from full ahead to full astern，there is complete steering control
C. When the vessel has headway and the propeller is in neutral，there is no effect on rudder control
D. When maneuvering in port，full ahead or astern power can usually be obtained without changing shaft RPM
作业标应设在距施工地点两端（）处列车运行方向左侧（双线在线路外侧）的路肩上。
A. 800m～1000m
B. 500m～1000m
C. 500m～1200m
《萨缪尔讯为经济学带来了深远的科学觉醒》是李义平先生的文章。
A. 正确
B. 错误
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