充装气瓶时,以下哪项是不正确的()
A.检查瓶内气体是否有剩余压力
B.注意气瓶的漆色和字样
C.两种气体混装一瓶
参考答案:C
The OPEC has recently cut back production and the price of oil has been ______ to $90 a barrel (桶).
A.risen
B.raised
C.arisen
D.arose
党的十八大报告中概括的科学发展观最鲜明的精神实质包括()
A.解放思想
B.实事求是
C.与时俱进
D.求真务实
E.城乡协调