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Which of the following statements concerning butterfly valves is correct?()
A . Special tools are required for lapping or grinding
B . It is impossible to throttle flow with a butterfly valve
C . To close the valve, it is only necessary to turn the handle a quarter of a turn
D . The butterfly valve should never be used in a freshwater system
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A butterfly valve consists basically of a disc pivoted across the bore of a ring body having the same radial dimensions as the pipe in which it is fitted.According to the above sentence, which of the following statements is not true?()
A . The diameter of a disc is the same as the outer diameter of the pipe
B . We can infer that the valve is opened or closed by rotating the spindle
C . A butterfly valve comprises a disc and a ring body
D . The profile of the butterfly valve is a ring body
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Tell them()the cargo, please.
A . not touch
B . to not touch
C . not to touch
D . to touch not
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What does the author intend to tell the reader?
A . here is still a long way to go for economists to genuinely contribute to global health.
B . Economists' role in global health is, to a large extent, negative
C . Economists increased the inequality of resource allocations in global health
D . Economics is only one science among many that policy makers have to take into account in providing health care programs
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The legend of 1900 tells the story that happened in 1900.
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D. H. Lawrence is a modernist novelist who makes reflections upon the dehumanizing effects of ( ) in his representative work Sons and Lovers.
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Kate tells Mark what the police said about the theft.
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What does the author intend to tell in the passage?.
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Butterfly Lovers tells story of the young couple who have no choice but to commit suicide to resist the_____ .
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The true identity of Mona Lisa and her __________ smile have intrigued art lovers around the world.
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The passage mainly tells us that( ).
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15. The passage tells us ____.
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On the day of my wedding, I wore a pair of Ferragamowith pearls in the shape of a butterfly.
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In the text, the author is trying to tell us.
A.how advertisers target young children
B.how important it is to protect children from advertisements
C.about the history of selling products to children
D.why advertisers target young children
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What does the man tell the woman?
A.He needs to see identification.
B.The documents will be sent to her room.
C.He forgot his notes for the morning.
D.She can pick up her package.
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What does the paragraph 4 tell us?
A.Housing boosts economic growth.
B.Manufacturing and housing jobs continue to fall.
C.Political importance is attached to manufacturing.
D.Service jobs growth will contribute to the recovery.
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The passage tells us that the author_____.
A.was a social worker
B.worked in the Body Positive office near the WTO
C.was asked to take some pictures of WTC
D.ran toward WTC because he wanted to make out what was happening
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The lovers maintain an __________ relation.
A.intimidate
B.imitate
C.intimate
D.immutable
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The passage tells us that
A.sometimes advertisements really sell what the consumer needs
B.advertisements occasionally force consumers into buying things they don't need
C.the buying motives of consumers are controlled by advertisements
D.fire insurance is seldom a worthwhile investment
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Contact the police and tell the mall () you know about the accident.
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______is the author of Sons and Lovers.
A.D.H. Lawrence
B.Virginia Woolf
C.James Joyce
D.John Galsworthy
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The young lovers have been trying to put some money______for their marriage ceremony.
A.across
B.aside
C.away
D.off
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It is ______ unusul feeling forniml lovers to see ______ gint pnd, one of Chin’s most fmousIt is ______ unusul feeling forniml lovers to see ______ gint pnd, one of Chin’s most fmousnimls.n; 不填 B.n; the C.the; the D.the; 不填
A.an; 不填
B.an; the
C.the; the
D.the; 不填
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By the underlined part(Para. 3), the author tells us to()
A.get ready for the worst result of things
B.enjoy the process of things
C.expect little from life
D.find the relationship between cause and effect