The functioning of the radiotelegraph installations for motor lifeboats and/or the portable radio apparatus for survival craft，if provided，（）with the provisions of the regulations.

A.place for people to lie down
B.means for rigging the sail
C.place for rowers to brace their feet
D.suitable means for water to drain below the footings

A.fire fighting operations
B.salvage operations
C.cargo operations
D.manoeuvering operations

A.oars
B.sail
C.boat plug
D.life preservers