流动室的类型有()
A.在室内检测的流动室
B.激发型流动室
C.在空气中检测的流动室
D.荧光流动室
E.显微检测流动室
参考答案:A, C, E
The little boy still needs the __________20 dollars to do with some things __________.
A.remaining;remained to be settled
B.remaining;remaining to be settled
C.remained;remained to settle
D.remained;remaining to settle
某学校1999名学生去游故宫、景山和北海三地,规定每人至少去一处,至多去两地游览,那么至少有多少人游的地方相同
A.35
B.186
C.247
D.334