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【简答题】
According to a news report, the 309 service staffs working in the Beijing-Shanghai high speed railway were selected from more than 5,000 employees of the Beijing Railway Bureau. These members must meet several requirements: they must be female, be 28 years old or younger, have fair-complexion and a curvy figure, weigh less than 60 kilos and be between 165-170 centimeters in height. Some people think this is discrimination against the otherwise 'unfit' employees. What is your opinion? Should we have these requirements for railway service staffs? Write an essay of about 400 words. You should supply an appropriate title for your essay.
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反馈参考答案：
举一反三
【多选题】7，8-二羟基香豆素类化合物可与（ ）
A.
异羟肟酸铁试剂的反应
B.
Gibbs试剂呈阳性反应
C.
Emerson试剂呈阳性反应
D.
碱试液反应，用于薄层检识
E.
稀盐酸反应
【简答题】()提出了“存在巨链”的概念。
【多选题】以下属于营销中介的是( )。
A.
中间商(批发商、代理商、零售商)
B.
物流配送公司(运输、仓储)
C.
市场营销服务机构(广告、咨询、调研)
D.
供应商(直接、外协)
【判断题】Sentences are composed of sequence of words arranged in a simple linear order, with one adding onto another following a simple arithmetic logic.
A.
正确
B.
错误
【简答题】英译中 explanatory variable linear regression homoscedasticity linear regression equation independence of errors independent variables slope least-squares method standard error of the estim...
【判断题】Sentences are composed of sequence of words arranged in a simple linear order, with one adding onto another following a simple arithmetic logic.
A.
正确
B.
错误
【判断题】Sentences are composed of sequence of words arranged in a simple linear order, with one adding onto another following a simple arithmatic logic.
A.
正确
B.
错误
【简答题】异羟基肟酸铁反应可用于检查 查看材料
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