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【单选题】
设关系R和S的属性个数分别为n和m,那么R S操作结果的属性个数为( )。A.
n m
B.
max(n,m)
C.
n+m
D.
n-m
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【单选题】I’ve managed to ________a five percent pay increase with my boss.
A.
combine
B.
negotiate
C.
muddle
D.
plead
【单选题】企业把整个市场划分为若干细分市场,从中选择二个以上乃至全部细分市场作为自己的目标市场,并为每个选定的细分市场制定不同的市场营销组合方案,同时多方位或全方位地分别开展针对性的营销活动,是( )目标市场营销策略。
A.
无差异营销策略
B.
差异性营销策略
C.
集中性营销策略
D.
分销策略
【简答题】A．influence B．burden C．effects D．pressures
【简答题】It’s taken me a while but at last I’ve managed to ___________ ( 克服我的恐惧 ) of public speaking.
【单选题】The New Products Development Department has been under the_____ of Mr. Harmon for the past five years.
A.
attendance
B.
supervision
C.
sight
D.
provision
【简答题】Competition for grades and other pressures are supposed to take the responsibility of ______.
【简答题】When he got the call that his son was ill in California and not expected to live for long, Bill didn’t know (1)_____he was going to get the money for his wife and himself to make the trip. Bill had wo...
【单选题】There may be a solid core at the center of the Sun______.
A.
because the pressures are great
B.
for the temperature is not high enough
C.
in spite of the great pressures
D.
because of the high temperature
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