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 hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.
单项选择题 Each fire hydrant must have at least one spanner and at least one（）.
单项选择题 Each fire hose coupling on a ship must have threads that meet the specifications of the（）.