相关考题
-
单项选择题
Prior to a ship’s departure from any port （） should be tested with deck officer to ensure satisfactory operation.
A.fire fighting pump
B.the steering gear
C.life boat engine
D.the main engine -
判断题
Windows具有多媒体功能，但不支持PlugandPlay（即插即用）。 -
单项选择题
A tide is called diurnal when（）.
A.only one high and one low water occur during a lunar day
B.the high tide is higher and the low tide is lower than usual
C.the high tide and low tide are exactly six hours apart
D.two high tides occur during a lunar day
