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【多选题】
下列哪些条件使企业进入壁垒增强 ( )A.
产品差别化大
B.
行业未形成规模经济
C.
产品差别化小
D.
行业形成规模经济
E.
以上都不对
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—What does the rock singer______? —He is tall and thin. [ ]
A.
look
B.
look like
C.
looks like
D.
like
【单选题】“The singer took a bow to the audience at the end of his performance.” What does the word “bow” mean?
A.
蝴蝶结
B.
弓
C.
鞠躬
D.
彩虹
【简答题】π 键的特点包括 、 和
【单选题】20150209社会化调查问卷中,对问题设计的要求一般不包括()
A.
以选择答案的问题为主
B.
问题要明确,不含糊
C.
用专业术语代替俗称
D.
不要有诱导性的提问
【单选题】What does the woman imply about the singer?
A.
The singer might win in a beauty contest.
B.
The singer is a very pretty woman.
C.
The singer is unattractive.
D.
No votes were cast for the singer at the beauty contest.
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