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【单选题】
并列于无穷大容量的电力系统的同步发电机,调节励磁电流,就能调节输出的( )。A.
有功功率
B.
无功功率
C.
电压
D.
频率
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【简答题】B: Listen. You will hear either sentence a or sentence b. Write the letter of the sentence you hear. 1. a. Did you watch the match? b. Did you watch the matches? 2. a. Write your name on the page. ...
【单选题】患者,男性,46岁,晚餐进食后突然出现上腹中部剧烈刀割样疼痛,向腰背部呈带状放射。继而呕出胆汁。体检:急性痛苦面容,全腹疼痛,腹肌紧张,体温38.5°C。初步考虑急性胰腺炎,紧急处理措施中最重要的是
A.
应用抗生素
B.
解痉镇痛
C.
胃肠减压
D.
降温
E.
观察病情
【单选题】How do librarians keep b6oks in order?
A.
They arrange the books in alphabetical order.
B.
They put the books into a card catalogue.
C.
They give a number to each book.
D.
They put the books on the shelves.
【判断题】Mass customization describes the ability of companies to use flexible manufacturing technology to reconcile the two goals of low cost and differentiation through product customization.
A.
正确
B.
错误
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