商品关系的主键是 (42) ;仓库关系的主键是 (43) ;仓库关系 (44) ,为了解决这一问题,需要将仓库关系分解为 (45) 。
(42)
A. 商品号
B. 商品名称
C. 生产商
D. 单价
(43)
A. 仓库号,地址
B. 仓库号,电话
C. 仓库号,商品号
D. 地址,电话
(44)
A. 无冗余、无插入异常,但存在删除异常
B. 无冗余,但存在插入异常和删除异常
C. 存在冗余,但不存在修改操作的不一致
D. 存在冗余、修改操作的不一致,以及插入异常和删除异常
(45)
A. 仓库1(仓库号,地址)和仓库2(仓库号,电话,商品号,库存量)
B. 仓库1(仓库号,地址,电话)和仓库2(商品号,库存量)
C. 仓库1(仓库号,电话)和仓库2(仓库号,地址,商品号,库存量)
D. 仓库1(仓库号,地址,电话)和仓库2(仓库号,商品号,库存量)
第1题
A.separate laytime for loading and discharging
B.total laytime for loading and discharging
C.commencement of laytime
D.laytime commencement of loading and discharging
第2题
Deadfreight is the charge for the ______.
A.carriage of demise cargo
B.cost of transshipment of over-carried cargo
C.difference in the amount of cargo loaded and the amount of cargo discharged
D.difference in the amount of cargo loaded and the amount of cargo booked,through no fault of the vessel
第3题
第4题
第5题
A.Carriage of goods
B.Taking cargo on board
C.Care for cargo
D.Taking delivery of
第6题
A.正确
B.错误
第7题
A.正确
B.错误
第8题
A.Cargo has been loaded or discharged
B.Cargo hose is connected
C.Cargo pumps are started
D.Vessel is ready to handle cargo
第9题
The date marked on the B/L is the date on which ()
A. the carrier takes delivery of the cargo
B. the goods arrive at port of destination
C. the cargo is actually loaded
D. the cargo is actually discharged
第10题
此题为判断题(对,错)。
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