皮皮学，免费搜题
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【单选题】
grocer/ ‘grəusə/A.
vi.倒坍;崩溃,瓦解
B.
n.地理,地理学
C.
n.食品商;杂货商
D.
n.同意,赞成 vi.同意
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【简答题】中国特色社会主义是党和人民胜利前进的光辉旗帜,是 的必由之路。
【单选题】An giraffe's head is about six feet above its heart. This means that to pump enough blood up to the brain the circulatory system must be strong enough to keep the blood at very high pressure. Bi...
A.
their legs and feet have strong skin and muscles
B.
their blood vessels are stiff and tough legs
C.
they wear a kind of special suit
D.
there are lots of one-way valves in the veins of their legs
【简答题】The giraffe is the tallest modern land animal. It can be over 5. 5 meters tall. Its neck alone may be 1. 9 meters long. Yet the giraffe has only seven bones in its neck, the same number as in the huma...
【单选题】The giraffe____its very long neck.
A.
is characteristic by
B.
is characterized by \
C.
characterizes by
D.
characteristic with
【简答题】某机床主轴工作和润滑泵分别有一台电机M1,M2控制,若启动时,M1先启动,M2才能启动。停车时,M2停车后,M1才能停车。应如何实现控制?要求有短路和过载保护,设计主电路和继电接触器控制电路,简单说明工作原理。
【简答题】Bringing a giraffe into the world is a tall order . A baby giraffe is born 10 feet high and usually lands on its back. Within seconds it rolls over its legs under its body. Then the mother giraffe rud...
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