（）是通过提供客观证据对规定要求已得到满足的认定。
A.验证
B.认证
C.评判
D.确认
参考答案：A
268. The limited supply of water has been put into practice, take care to turn off the running ____ before you leave.
A．radio
B．traffic lights
C．gas
D．Tap
镁主要通过什么途径排泄( )
A．肝脏B．肾脏C．唾液腺D．消化道E．皮肤汗腺
