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【判断题】
若-条传输线路可接受600~2000Hz的频率,则该传输线的带宽是1400Hz。( )
A.
正确
B.
错误
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【简答题】Luis: Ana Pedroso works for Silica, ________________ ? Chris: Yes, she works in the design department.2. Luis: Your company has customers in Brazil, ________________ ?Chris: Yes, Silica has a lot of c...
【简答题】硬件组态的任务就是在STEP7中生成一个与()完全相同的系统。
【单选题】为英文单词选择正确的汉语解释。 consultant
A.
取消
B.
接待员
C.
助手
D.
(顾问)医生
【单选题】—May I speak to Mr Brown? —_____. I'll go and get him. [     ]
A.
Speaking
B.
Wrong number
C.
Hold on, please
D.
Yes, I am
【单选题】国际商品协定的主要对象是()。
A.
钢铁产品
B.
汽车
C.
初级产品
D.
纺织产品
【单选题】It's very important _____ him _____ the violin very well. [     ]
A.
of, to play
B.
for, to play
C.
of, plays
D.
for, plays
【简答题】Choose the best answer for each blank 1. She has to __________ her passport before a trip to South Africa since it will expire next month. A. revise B. retract C. review D. renew 2. As the only...
【单选题】国际商品协定的主要对象是()
A.
纺织品
B.
农产品
C.
初级产品
D.
工业制成品
【单选题】The connected joints of pipe,usually made of three joints of pipe approximately 90 feet long,racked in the derrick when making a trip are called a().
A.
string
B.
stand
C.
joint
D.
standpipe
【简答题】硬件组态的任务就是在STEP7中生成一个与( [填空(1)] )完全相同的系统。
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