The ship's officers must _______ checking on the stowage of all the cargoes loaded on board.
A.do
B.be interested in
C.have relation to
D.be troubled with
正确答案是A
The ship's officers must _______ checking on the stowage of all the cargoes loaded on board.
A.do
B.be interested in
C.have relation to
D.be troubled with
正确答案是A