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【单选题】
______. In fact, most of our food exports go to the wealthier areas--- Europe, Japan and Canada. We currently ship three times more agricultural exports to Europe than to Latin America and Africa combined. Of the ten leading U.S. agricultural exports, four-hides, tallow, cotton, and tobacco are not edible at all, and of the remaining six, only two are high in protein--- nonfat dry milk and soybean. Most of the soybeans go to Japan, Western Europe and Canada, where they are fed to livestock. As for the one million tons of protein imported annually by the rich nations from the poor nations, much, if not most of it comes from the soil of the underdeveloped world and goes into the mouths of European livestock in the form of high-protein seed meals.
A.
America’s exports and imports are not balanced.
B.
While America absorbs protein from underdeveloped countries,it doesn’t return it as protein-rich food.
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【单选题】后天之本是指
A.
B.
C.
D.
E.
【判断题】锅炉蒸汽参数是指锅炉汽包出口处饱和蒸汽的压力和温度。
A.
正确
B.
错误
【判断题】Windows 7在系统安装时已为用户预装了微软拼音等多种输入法。用户可根据自己的需要,任意安装或卸载某种输入法。
A.
正确
B.
错误
【单选题】( ) 的集合称为网络体系结构.
A.
数据处理设备和数据通信设备
B.
层和协议
C.
通信子网和资源子网
D.
通信线路和通信控制处理机
【单选题】汽包锅炉的蒸汽参数是指()的压力和温度。
A.
汽包出口处的饱和蒸汽;
B.
汽轮机入口蒸汽;
C.
过热器出口处的过热蒸汽;
D.
凝汽器入口蒸汽。
【单选题】后天之本是指
A.
B.
C.
D.
E.
【判断题】锅炉蒸汽参数是指锅炉汽包出口处饱和蒸汽压力和温度,而不是过热器出口处的蒸汽压力和温度。
A.
正确
B.
错误
【单选题】Xiaoming passed the interview of this famous company _______surprised everyone in the class.
A.
that
B.
which
C.
it
D.
then
【单选题】男性,0岁,右足底被铁锈钉刺伤10天,突然出现张口困难,继之出现苦笑面容,角弓反张,声响及触碰病人可诱发上述症状,病人神志清楚,不发热。对机体威胁最大的是
A.
肌肉断裂
B.
骨折
C.
尿潴留
D.
持续的呼吸肌痉挛
E.
营养障碍
【判断题】Windows 7在系统安装时已为用户预装了微软拼音等多种输入法。用户可根据自己的需要,任意安装或卸载某种输入法。
A.
正确
B.
错误
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