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【简答题】
离心泵的工作点由 和 决定。
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皮皮学刷刷变学霸
举一反三
【简答题】I play tennis ____ ____. 我不再打网球。
【单选题】测定溶液的PH时,仪器定位后,要用第二种标准缓冲液核对仪器示值,误差应不大于( )个PH单位
A.
±0.05pH
B.
±0.04pH
C.
±0.03pH
D.
±0.02pH
【单选题】I play tennis but ______ my brother does.
A.
not half as well as
B.
not half as well than
C.
not half better than
D.
not half so better as
【单选题】-Do you play football, Rosie? -I ________, but now I play tennis.
A.
used to
B.
was used to
C.
use to
D.
am use to
【单选题】I play tennis every Tuesday. Last week, I was playing with John, a man I am knowing from work, when a bird flew into the tennis net.
A.
was playing
B.
play
C.
am knowing
D.
flew
【单选题】—What do you often do________ ? —On Saturday I do my homework and on Sunday I play tennis with my sister.
A.
every day
B.
this week
C.
on weekends
D.
after class
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