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【单选题】
His brother __ a lot of silkworms last summer.A.
rose
B.
fed
C.
raised
D.
grew
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皮皮学刷刷变学霸
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【简答题】某低温热水地面辐射供暖系统,系统工作压力为0.4MPa,采用PE-X管,管子的公称外径为20mm,根据规范,管子的壁厚应为多少?
【单选题】Mooring winches are often combined with _____ units so that one prime mover drives both.
A.
crane
B.
hatch cover
C.
windlass
D.
steering gear
【单选题】The Chinese premier is the ________________ of the British prime minister. They are both heads of their government.
A.
counterculturist
B.
counteract
C.
counterpart
D.
countercharge
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