单项选择题
A.stomach B.lower intestines C.inner ear D.bladder
A.keep the propeller from being fouled B.increase propeller speed C.help calm the waves in the vicinity of the craft D.increase the holding power of the sea anchor
A.immediately reverse the engines B.stop the propellers from turning and throw a ring buoy over the side C.increase speed to full to get the vessel away from the person D.first put the rudder hard over in either direction