EDTA几乎能与所有的金属离子形成络合物，其组成比几乎均为1∶1。
参考答案：对
国际社会如何应对出生缺陷问题？
Which of the following would require real-time processing（71）
A．Playing a computer game
B．Executing a program that predicts the state of economy
C．Printing labels
D．Listening the music
