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【判断题】
固定光衰减器对光功率衰减量固定不变,主要用于调整光纤传输线路的光损耗。
A.
正确
B.
错误
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【判断题】一般而言,中间继电器、时间继电器和信息继电器的线圈上所加工作电源为直流。
A.
正确
B.
错误
【多选题】许渊冲提出的诗歌翻译的“三美论”包括?
A.
音美
B.
境美
C.
形美
D.
意美
【判断题】与人打招呼要体现主动性,但还需依照自己身省份来进行合适选择,不可不论地位的高低过分热情。
A.
正确
B.
错误
【判断题】与人打招呼要体现主动性,但还需依照自己的身份来进行合适选择,不可不论地位高低过分热情 。
A.
正确
B.
错误
【简答题】写出C原子的核外电子排布式。
【多选题】配置砂浆的原料只要是( )。
A.
水泥
B.
细砂
C.
石子
D.
混凝土
【判断题】单相双值电容电动机启动时,采用两个电容并联以增大电容值,达到增大启动转矩的目的,启动后,切除一个电容,减少电容值的目的是为了提高功率因数,有较好的 工 作性能。( )
A.
正确
B.
错误
【单选题】回答下列各题 ·Read this Letter to the editor of The Economist. ·Choose the best sentence from the opposite page to fill each of the blanks. ·For each blank(8-12),mark one letter(A-G)on your Answer Sheet. ·D...
A.
This is in large due to its broadly based tax structure.
B.
New Mexic0’S extractive mineral industries contribute about a third of the state’S $1.9 billion general-fund income in fiscal year l 991.
C.
However.the extractive mineral industry in New Mexico is one of the state’S strongest economic forces.
D.
During fiscal year l 992 New Mexico raised permanent funds worth about$6.1billion.
E.
The combined value of oil and gas production was$2.8 billion.
F.
Some 16,000 employees work in the extractive industries and their wages are among the highest of any major industry.
G.
The$39 million earned by these funds in l 991 was used to finance education and other public services. (8)__________
【简答题】Directions: For this part, you are allowed 35 minutes to write a letter to the editor of a newspaper complaining about the poor service of a bookstore. You should write at least 150 words according to...
【判断题】与人打招呼要体现主动性,但还需依照自己的身份来进行合适选择,不可不论地位高低过分热情。
A.
正确
B.
错误
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