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【单选题】
烟气采样前应对采样系统进行漏气检查。对不适于较高减压或增压的监测仪器，方法是先堵住进气口，再打开抽气泵抽气，当（）min内流量指示降至0时，可视为不漏气。A.
2
B.
5
C.
10
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反馈参考答案：
举一反三
【单选题】听力原文：W: Tom is good at volleyball and Mike does well in Basketball. What's your favorite sport? M: I like playing volleyball best. Q: What is the man's favorite sport? (22)
A.
Volleyball.
B.
Basketball.
C.
Ping-pong.
【判断题】The bow-wow theory is based on the fact that modern languages have some words with pronunciations which seem to echo natural souds.
A.
正确
B.
错误
【单选题】The words “bow-wow”, “bang”, “tick-tuck” are ____ words.
A.
onomatopoeically motivated
B.
morphologically motivated
C.
semantically motivated
D.
etymologically motivated
【单选题】What can we learn about 'soap operas' from the passage?A． They are teenagers favori
A.
24． What can we learn about 'soap operas' from the passage? A． They are teenagers favorites，
B.
They are much more expensive．
C.
They are les8 attractive．
D.
They are cheaper and easier to make，
【判断题】The bow-wow theory is based on the fact that modern languages have some words with pronunciations which seem to echo natural souds.
A.
正确
B.
错误
【单选题】听力原文：M: What do you do in your spare time? W: A lot of things, but reading is my favorite. Q: What does the woman of ten do in her spare time? (9)
A.
A lot of things
B.
Nothing special
C.
Reading
D.
Sports
【判断题】The bow-wow theory is based on the fact that modern languages have some words with pronunciations which seem to echo natural sounds.
A.
正确
B.
错误
【单选题】The words like “bow-wow”、“bang”、“tick-tuck”are _____ motivated.
A.
morphologically
B.
semantically
C.
etymologically
D.
phonetically
【判断题】The bow-wow theory is based on the fact that modern languages have some words with pronunciations which seem to echo natural sounds.
A.
正确
B.
错误
【判断题】The bow-wow theory is based on the fact that modern languages have some words with pronunciations which seem to echo natural sound.
A.
正确
B.
错误
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