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【单选题】
在调谐放大器的LC回路两端并上一个电阻R,可以
A.
提高回路的Q值
B.
加宽通频带
C.
提高谐振频率
D.
减小通频带
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举一反三
【简答题】A.The teacher must learn everything by heart. B.He knows to control his voice better than an actor. C.He has to deal with unexpected situations. D.He has to use more facial expressions.
【单选题】The word 'classified' in the second paragraph most probably means______
A.
arranged in classes
B.
officially secret
C.
traditional
D.
public
【简答题】For this part, you are allowed 30 minutes to write a composition. You should write at least 100 words and base your composition on the outline given below in Chinese. 王海学了几年英语,由于没有经常进行听说训练,遇到外宾时,他听不懂,...
【简答题】You are required to write A Welcoming Speech according to the given information in at least 100 words. Remember to write it in the corresponding space on the Answer Sheet. 背景:林翔是某本科高校的学生会,在欢迎“专升本”新同...
【单选题】胎盘剥离征象,正确的是
A.
子宫底下降,子宫收缩呈球形
B.
子宫底下降至脐下2指
C.
阴道大量流血
D.
阴道口外露的脐带自行下降延伸
E.
按压子宫下段,子宫体上升而脐带回缩
【判断题】S7-200 系列 PLC 是采用 “ 并行 ” 方式工作的。
A.
正确
B.
错误
【单选题】He knows better than ________________ by apperances.
A.
to judging
B.
to judge
C.
to be judged
D.
to being judged
【判断题】S7-200 PLC 是采用“并行”方式工作的。
A.
正确
B.
错误
【判断题】中国生产经济文化的核心特征: (1)天时、地利、人勤的重农经验; (2)以工补农、以商求富的农人心理; (3)精打细算、知足节用的务农传统。
A.
正确
B.
错误
【单选题】The word "classified" in line 21 is closest in meaning to
A.
perfected
B.
replaced
C.
categorized
D.
protected
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