从不同角度设计新的规划方案,为决策提供更为广泛的选择空间的是修改规划方案应遵循的()原则。
A.目标约束性
B.充分性
C.现实性
D.广泛参与
参考答案:B
It's surprising that your brother _____ Russian so quickly-he hasn't lived there very long. [ ]
A. picked up
B. looked up
C. put up
D. made up
我国规定:在一般情况下,人体触电的极限安全电流为()。