单项选择题
Thirty-five percent of the breaking strength of an anchor cable is generally accepted as the（）.
A.safe operating load B.normal operating tension C.emergency working load D.allowable storm load
单项选择题 The vessel’s Emergency Position Indicating Radio beacon (EPIRB) must be tested（）.
单项选择题 The signal for a fire emergency on an OSV is（）.
单项选择题 The shear rams of a ship blowout preventer stack are used in emergency well control to（）.
