The number and position of hydrants arranged on board shall be such that _______，one of which shall be from a single length of hose，may reach any part of the ship normally accessible to the passengers or crew while the ship is being navigated．
A.at least two jets of water which shall be from the same length of hose
B.at least two jets of water emanating from the same hydrant
C.at least two jets of water not emanating from the same hydrant
D.at least two jets of water not emanating from the same hydrant，one of which shall be from a single length of hose
正确答案：D
