单项选择题
The design specifications for cranes and crane foundations on ship’s are set and published by the（）.
A.American Society of Mechanical Engineers
B.American Petroleum Institute
C.Society of Petroleum Engineers
D.American Society of Civil Engineers
单项选择题 The depth（）a shallow patch，lying about 1.3 miles southeastward of Nanshan Tou lighthouse reduces to about 6.1 meters.
单项选择题 The datum from which the predicted heights of tides are reckoned in the tide tables is（）.
单项选择题 The dangerous semicircle of a typhoon in the Southern Hemisphere is that area（）.