单项选择题
A.answers very well B.rudder answers all right C.answers slow D.answers fast
Free communication effect is in direct proportion to（）....
单项选择题Free communication effect is in direct proportion to（）.
A.length and width of space B.length of space only C.width of space only D.neither length nor width
Electrical wiring on all T-Boats must be（）.A.concealed ...
单项选择题Electrical wiring on all T-Boats must be（）.
A.concealed to prevent mechanical damage B.concealed so the boat can be maintained more easily C.protected from the weather D.in an accessible place behind the ceiling
DO NOT，REPEAT，NOT OVER-TAKE means that you should（）.A.o...
单项选择题DO NOT，REPEAT，NOT OVER-TAKE means that you should（）.
A.overtake B.not overtake C.overtake or not D.decide if you should overtake
