问题
单项选择题
The litter on a ship must be able to().
A.carry at least two injured persons
B.float for at least two hours
C.be used on the types of helicopters serving the unit
D.All of the above
答案
参考答案:C
The litter on a ship must be able to().
A.carry at least two injured persons
B.float for at least two hours
C.be used on the types of helicopters serving the unit
D.All of the above
参考答案:C