【单选题】并联谐振式逆变器虽然换流期间四只晶闸管都导通,但由于 ( ) 的作用,电源不会短路。
【单选题】Which of the following best describes the relationship of the first paragraph of the passage to the passage as a whole?
A.
It provides a group of specific examples from which generalizations concerning the nature of drama are drawn later in the passage.
B.
It explains principles concerning one aspect of tragedy, which are followed later by principles for other aspects.
C.
It defines terms of dramatic principles that are more thoroughly explained later in the passage.
D.
It briefly compares and contrasts the principles of drama that are examined in detail later in the passage.
E.
It explains a method of judging a work of drama, a method that is used later in the passage.
【单选题】英国设计师Hussein Chalayan是一名怪才,对他设计的描述下列哪个较为符合:
【单选题】Which of the following best describes the function of the concluding sentence of the passage?
A.
It sums up the general points concerning the mechanization of work made in the passage as a whole.
B.
It draws a conclusion concerning the effects of the mechanization of work which goes beyond the evidence presented in the passage as a whole.
C.
It restates the point concerning technology made in the sentence immediately preceding it.
D.
It qualifies the author's agreement with scholars who argue for a major revision in the assessment of the impact of mechanization on society.
【单选题】乒乓球拍分为直拍与横拍两种,由木制球板、海绵、以及橡胶皮组成。胶皮必须一面是( )色,另一面是( )色。
【简答题】《水浒传》中这样写道: “山顶上立一面杏黄旗,上书 ‘替天行道’四字,忠义堂前绣字红旗后面:一书 ‘山东呼保义’一书 ‘河北玉麒麟’”。请问,上段话中的字分别写的是__________两位首领的称谓。
【单选题】Which of the following can NOT be inferred from the passa.ge? 查看材料
A.
Birds do not migrate at the same time.
B.
Birds usually follow regular routes of migration.
C.
Each species has a special reason for migration.
D.
Birds migrate to their own particular places every year.
【单选题】患者,女性,24岁,贫血1年,血红蛋白80g/L,对缺铁性贫血治疗中最重要的措施是
【单选题】Which of the following can NOT be inferred from the passa.ge?
A.
Birds do not migrate at the same time.
B.
Birds usually follow regular routes of migration.
C.
Each species has a special reason for migration.
D.
Birds migrate to their own particular places every year.
【单选题】英国设计师 Hussein Chalayan 是一名怪才,对他设计的描述下列哪个较为符合: