单项选择题
A.the pump discharge
B.the manifold connection
C.each fire station discharge
D.the pump station
单项选择题 Each fire hose coupling on a ship must have threads that meet the specifications of the（）.
单项选择题 Each EPIRB required on an OSV shall be tested using the integrated test circuit and output indicator every（）.
单项选择题 Each EPIRB required on a ship shall be stowed in a manner which will permit（）.