环境影响是环境保护( )政策的具体表现。
A．“谁开发谁治理”
B．“防患于未然”
C．“有选择的开发利用”
D．“合理开发利用”
参考答案：B
—Would you like me the radio a bit?
—No, it’s all right. I’m used with the radio .
A．to turn down; to work; on
B．turning down; to working; on
C．turning down; to working; off
D．to turn down; to working; on
FISP与SSFP所属的序列为（）
A.SE序列
B.IR序列
C.GRE序列
D.TSE序列
E.EPI
