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【单选题】
关于磁场和磁感线，下列说法中正确的是 [ ]A.
只有磁铁周围磁场
B.
磁感线是由铁屑组成的
C.
磁体周围的磁感线都是从磁体的北极出来，回到磁体的南极
D.
在磁场中某点的小磁针静止时，南极的指向就是该点的磁场方向
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【单选题】In the late 1970s, the accepted medical theory was that ulcers were caused by stress, smoking, and alcohol,
A.
Y
B.
N
C.
NG
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【单选题】Our small investment has been _____by what the private sector has put in.
A.
drifted
B.
dwarfed
C.
dripped
D.
daunted
【单选题】Refer to the scenario below to answer the following question. Carol Veldt, owner of Seagull Terrace, watched her investment grow from a small, seaside motel to a thriving year-round resort in just a f...
A.
target market
B.
market offering
C.
market segment
D.
market mix
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【单选题】It was the late 1970s that American manufacturing factories realized that quality control was a significant issue. {A; B; C}
A.
它是在1970年代晚期美国的制造业工厂才意识到质量控制是一个重大问题。
B.
美国的制造业工厂在1970年代发现质量控制是一个重大问题已经很晚了。
C.
1970年代晚期美国的制造业工厂才意识到质量控制是一个重大问题。
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