液氯气化加热时,一般用(),要有防止物料倒灌至液氯钢瓶的措施。
A、蒸汽
B、温水
C、明火
参考答案:B
There have been several new events ______ to the program for the 2012 Olympic Games.[ ]
A. add
B. to add
C. adding
D. added
幕上星形细胞瘤多见于()
A.额叶
B.颞叶
C.顶叶
D.枕叶
E.视丘