散热器采用的是()进行热交换的形式。
A、水与油
B、油与空气
C、水与水
D、水与空气
参考答案:D
We hadn't expected _____ so many people present at the meeting. [ ]
A. there being
B. there to being
C. there is
D. there to be
下列不属于全真教三大祖庭的是()。
A.陕西重阳宫
B.北京白云观
C.成都青羊宫
D.山西芮城永乐宫