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【单选题】
图3-13中符号表示的设备是（）。A.
闸阀
B.
节流阀
C.
安全阀
D.
截止阀
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皮皮学刷刷变学霸
举一反三
【单选题】The old scientist decided to move to his country home ______ his advanced age and poor health.
A.
in the interest of
B.
as a result of
C.
on account of
D.
in support of
【单选题】BUILDING: FOUNDATION ：：
A.
apparatus：mesh
B.
structure：pedestal
C.
cosmos：earth
D.
hill：grotto
E.
pennant：pillar
【简答题】For what did the author fall in love with Butch? (Para.3) (原文para 3) Riding on his bicycle, he'd ride past my dorm as if "by accident" and pretend to be surprised to see me. I liked the attention but...
【单选题】Although they are poor, ________.
A.
they are happy
B.
but they are happy
C.
so they are happy
D.
still they are happy
【单选题】Although customers keep complaining about their Poor service, they've made no ______. to make any improvement.
A.
action
B.
trial
C.
attempt
D.
progress
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