针对高科技含量的新产品,其上市前的定价调查可以用()
A、专家小组
B、态度量表
C、案头调查
D、电话调查
参考答案:A, B, C
He suddenly saw Sue _____ the room. He pushed his way ______ the crowd ofpeople to get to her? [ ]
A. across; across
B. over; though
C. across; through
D. over; into
Fzh-CTC分散自律调度集中车站系统控制台及自律机()灯点亮时,表示操作由自律机执行。
A、红
B、黄
C、绿
D、白