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【简答题】
关系模型的完整性包括实体完整性、 完整性、域完整性和用户定义完整性。
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皮皮学刷刷变学霸
举一反三
【简答题】TheSeller agrees to sell the Buyer _____________ pieces of men's jackets.
【单选题】The Buyer agrees to buy and the Seller agrees to sell the( ) commodity.
A.
under
B.
underneath
C.
below
D.
under mentioned
【单选题】Mary went to the box office at lunch time, but all the tickets __________ out．
A.
would sell
B.
had sold
C.
have sold
D.
was selling
【单选题】(单项选择题)全陪的在旅游过程中,承担的首要任务是()。
A.
做好旅游者人身和财产安全工作
B.
宣传调研工作
C.
各站之间的有机衔接，按照计划对各站服务进行协助、检查和督促
D.
维护旅游团的团结
【单选题】________ is a practice whereby a producer agrees to sell a brand to a dealer only if the dealer agrees to sell some or all of the rest of its products.
A.
Horizontal price fixing
B.
Horizontal integration
C.
Full-line forcing
D.
Direct marketing
E.
Disintermediation
【简答题】按PLC物理结构形式的不同,可分为 和模块式两类。
【单选题】The Buyer agrees to buy and the Seller agrees to sell the under-mentioned commodities according to the terms and conditions ___________ below:
A.
stipulated
B.
stated
C.
negotiated
D.
suggested
【单选题】Mary agrees to sell a used car to Bill for $ 5,000. After Bill pays, Mary tells him to come over and pick up the car. However, Bill waits until Wednesday to pick up the car. In the meantime, the car i...
A.
Mary.
B.
Bill
C.
Neither Mary and Bill
D.
Both Mary and Bill
【简答题】按 PLC物理结构形式的不同,可分为 、 和模块式三大类
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