在南北两半球,每年各有半年的极昼和极夜。( )
参考答案:错
On the contrary, I think it is Truman, you, to blame.
A.more than; are
B.less than; who are
C.rather than; that is
D.rather than; is
硫磺回收装置的作用是()。
A、降低产品消耗
B、清洁生产
C、提高经济效益
D、无法比较