Keep （） to that point,said the pilot．

单项选择题It’s all right to rig the pilot ladder on lee side （）.

A.to allow port Authorities to board
B.allowing port Authorities to board
C.to allow port Authorities boarding
D.allowing port Authorities to be boarded

单项选择题Is the pilot ladder all right at this （）

A.high
B.highly
C.heigh
D.height

单项选择题Is the pilot boat （） station

A.in
B.at
C.with
D.on

单项选择题Insufficient space between the hull and bottom in shallow water will prevent normal screw currents resulting in （）.

A.waste of power
B.sudden sheering to either side
C.sluggish rudder response
D.All of the above

单项选择题Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）

A.List of Lights
B.Coast Pilot
C.Sailing Directions
D.List of Radiobeacons