地震勘探资料采集系统主要有哪些部件？
参考答案：
地震勘探资料采集系统主要有地震检波器、数字地震仪、电子计算机。
All made possible for China to succeed in carrying on its reforms and open-door policy.
A．what happened; it
B．what happened; that
C．that happened; it
D．that happened; that
首先发现A型人格的是（）
A.弗洛伊德
B.伯克维兹
C.弗瑞德曼
D.津巴多
