48 When a ship runs , it is important to know: Is the ship taking on water? How fast is the flooding? Are there any pumps onboard?
(A)onboard
(B)onward
(C)aboard
(D)aground.
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統計: A(18), B(11), C(17), D(46), E(0) #2019485
統計: A(18), B(11), C(17), D(46), E(0) #2019485