The authors attitude toward the outlook of oil price in the future is______.
A. pessimistic
B. optimistic
C. indifferent
D. unclear
It can be inferred from the last paragraph that the credit of American universitys success
A. the adaption to the needs in society
B. the protection of the independence of universities
C. the persevering exploration in advanced science and technology
D. the active involvement in social movement
目前绝大部分的动力堆都采用圆柱形堆芯，其热中子通量分布，在高度上为()分布，半径方向上为()分布。
A. 正弦余弦
B. 正弦零阶贝塞尔函数
C. 余弦余弦
D. 余弦零阶贝塞尔函数
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