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【单选题】
链球菌感染后引起的超敏反应性疾病是A.
产褥热
B.
风疹
C.
风湿热
D.
波状热
E.
以上均不是
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皮皮学刷刷变学霸
举一反三
【单选题】甲午战后,由于湘、淮军的溃败,清廷开始“仿用西法,编练新军”,并在天津小站成立了以( )由为首的练兵机构,这支军队称之为北洋新军。
A.
张之洞
B.
李鸿章
C.
袁世凯
D.
刘铭传
【单选题】Students from a wide range of countries attend a professional exam: A questionnaire is sent to a selected number of students at the end of the exam which should be completed compulsorily. The samples ...
A.
Multi-stage
B.
Stratified
C.
Cluster
D.
Systematic
【单选题】Samples are provided by the buyer as the quality standard for the goods. In order to avoid future disputes over the quality of the goods, the seller usually first duplicates the samples and then sends...
A.
duplicate sample
B.
original sample
C.
counter sample
D.
sealed sample
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