单项选择题
A.course B.track C.heading D.course over the ground
The difference in water spray pattern between the high-...
单项选择题The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.
A.a difference in water pressure B.the method of breaking up the water stream C.the length of the applicator D.All of the above
The dew point is reached when the（）.A.temperature of th...
单项选择题The dew point is reached when the（）.
A.temperature of the air equals the temperature of the seawater B.atmospheric pressure is 14.7 lbs. per square inch C.relative humidity reaches 50% D.air becomes saturated with water vapor
The design specifications for cranes and crane foundati...
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
