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【单选题】
下列不属于提早断奶优势的是( )A.
提高饲料利用率
B.
提高仔猪适应性
C.
减少仔猪感染疾病的机会
D.
. 缩短母猪的繁殖周期
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皮皮学刷刷变学霸
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【简答题】线圈一端的绝缘皮只刮去半周,则这半周线圈转动的原理是 ________________________ ;另外半周的绝缘皮没有刮掉,则这半周线圈是在 _________ 的作用下实现连续转动的。 简易线圈的这种结构相当于电动机的 __________ 。
【单选题】The Joneses (have visited) Hawaii and Alaska, and they (assure me) that (they) like Alaska (the best).
A.
have visited
B.
assure me
C.
they
D.
the best
【单选题】The Alaska Pipeline The Alaska pipeline starts at the frozen edge of the Arctic Ocean. It stretches southward across the largest and northernmost state in the United States, ending at a remote ice-fre...
A.
operating costs
B.
employees
C.
consumers
D.
construction
【简答题】It is time to start planning your 2010 Alaska Vcation! Take a look at newly expanded Alaska tour. Alaska hotels, and Alaska vacation packages. Our 2010 selection offers the most Alaska travel options ...
【简答题】A．Because gold was found in Alaska. B．Because Alaska has an abundance of seafood. C．Because Alaska proved rich in oil and minerals. D．Because Alaska is bordered by Yukon.
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