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【单选题】
A scientist who can speak English is in closer touch with those of other countries than ______ who doesn’t.A.
that
B.
those
C.
/
D.
one
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【单选题】护士长根据工作任务的难度选择适当的工作任务，授权给某位护士，是遵循了授权的哪项原则
A.
量力授权原则
B.
带责授权原则
C.
合理授权原则
D.
以信为重原则
E.
部分授权
【判断题】强制对流(Forced flow)和自然对流(Free\Natural flow)的区别是：强制对流是在风扇、泵、搅拌下的流动(人为外部力驱动)，而自然对流是在温差和密度差驱动下的流动(浮升力驱动)。
A.
正确
B.
错误
【单选题】The Importance of Agriculture in China The development of agriculture and the balance between food and population are China' s fundamental economic problems. The classical histories praise emperors fo...
A.
determines the progress of industry
B.
the story of the unfolding struggle to feed a peasant population.
C.
either agricultural raw materials
D.
enlarging the capacity of the economy to import machinery and commodities for industry
E.
In addition to the direct links between agriculture and industry
F.
thus promoting both import and export 第 46 题 请选择（1）处的最佳答案．
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