下列关于世界降水量的分布规律,说法正确的是()
A回归线附近大陆东岸降水少
B赤道地区多雨,两极地区少雨
C山地背风坡降水多
D温带地区内陆降水多
参考答案:B
---The students sitting at the back can’t see the blackboard________.
---Why not_________ them move a little forward?
A.clear enough, let
B.enough clear, letting
C.clearly enough, let
D.enough clearly, letting
主偏角大,加工中容易引起振动。( )