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【单选题】
He______________in the army for ten years, and he retired last year.A.
has served
B.
had served
C.
served
D.
had been serving
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举一反三
【单选题】From facts, scientists have that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.
A.
confirmed
B.
concluded
C.
concentrated
D.
centred
【简答题】电弧焊对弧焊变压器有何要求?如何满足这些要求?
【单选题】Choose the best option for the sequence of A and B. The centre or nuclei of the atoms fuse together. This in turn releases more energy and causes the star to heat up.A= the nuclei of the atoms fuse to...
A.
happens first
B.
happens first
C.
A and B happen at approximately the same time
D.
Not given
【单选题】阿莫西林与氨苄西林相比,不正确的特点是
A.
血药浓度为口服同等极剂量氨苄西林的2倍
B.
对B内酰胺酶稳定
C.
治疗支气管炎和肺炎的疗效优于氨苄西林
D.
对幽门螺旋杆菌作用强
【单选题】The theory is of great importance _______ the hotter a boby is, the more energy it radiates.
A.
that
B.
when
C.
which
D.
what
【简答题】一、中文打字 共1题 强调,要重点抓好防治工作的区域统筹。湖北省特别是武汉市是全国疫情防控工作的重中之重,稳住了湖北疫情就稳住了全国疫情。为了应对不断扩散的疫情,1月23日武汉市实施封城,截断病毒的传播通道。紧接着湖北其他市区相继宣布封城,湖北省采取封省来隔离疫情。武汉人民、湖北人民为切断疫情做出了最大的努力,在病毒疫苗尚未研发成功之际,武汉及湖北人民在缺医少药的疫区中听从政府的统...
【单选题】The theory is of great importance ______ the hotter a body is, the more energy it radiates.
A.
that
B.
when
C.
which
D.
what
【单选题】单作用叶片泵具有何结构特点
A.
作用在转子和定子上的液压径向力平衡
B.
所有叶片的顶部和底部 所受液压力平衡
C.
不考虑叶片厚度，瞬时流量是均匀的
D.
改变定子和转子之间的偏心可改变排量
【单选题】．The theory is true _______ the hotter a body is, the more energy it gives off.
A.
that
B.
when
C.
which
D.
what
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