现场管理要达到哪些目标（）
A.品质、成本
B.效率、交期
C.协调、简单
D.安全、士气
参考答案：A, B, D
— How clever you are! How can I know as much as you?
— ______ you read, _______ you can learn.
A．More; more
B．The more; more and more
C．The more; the more
D．More and more; more and more
常用的正弦波振荡电路有哪几种（）。
A.LC振荡电路
B.RC振荡电路
C.LK振荡电路
D.RL振荡电路
