单项选择题
The payment proportionate to the part of the voyage accomplished or to the part of the cargo delivered is referred as（）.
A.advance freight B.back freight C.dead freight D.pro rata freight
单项选择题 The majority of cargo gear breakdowns are a result of（）.
单项选择题 The inability to supply a cargo of the contractual quantity in the country of shipment（）the doctrine of frustration into operation.
单项选择题 The full utilization of berths can be achieved if（）.
