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【简答题】
环形零件在细、精加工阶段往往安排有人工时效工序，其目的是()。 A.提高零件机械性能 B.改善加工性 C.消除内应力
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皮皮学刷刷变学霸
举一反三
【单选题】Ⅰ. At a pedestrian crossing: a) When you have stepped off the pavement on to a zebra crossing, traffic must stop to let you cross. But don't be foolish: make sure that drivers have enough time to give...
A.
expect cars to stop for you
B.
cross without giving the driver enough time to stop
C.
step off the pavement
D.
expect drivers to give you enough time to cross
【单选题】When crossing the street, we can not be ______ careful.
A.
very
B.
quite
C.
too
D.
such
【单选题】A yellow taxi _______ alongside a truck at the traffic lights when an elderly woman was crossing the road.
A.
brought up
B.
took up
C.
pulled up
D.
put up
【单选题】When they arrived at the second crossing, they went the wrong ______.
A.
direction
B.
way
C.
route
D.
street
【简答题】The old lady carrying a basketful of eggs was run down by a taxi when crossing the street．
【简答题】The old man was knocked down by a taxi when crossing the street.
【简答题】阐述普萘洛尔与硝酸酯类联合应用抗心绞痛的药理基础。
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