以下名山中属于花岗岩名山的有（）。
A.福建武夷山
B.江西三清山
C.安徽九华山
D.南京栖霞山
E.辽宁千山
参考答案：B, C, E
The number of the students who attended the meeting yesterday ______ more than 400. [ ]
A. was
B. were
C. will be
D. has been
列管式换热器属于（）
A.蓄热式换热器
B.间壁式换热器
C.混合式换热器
D.浮头式换热器
