酸碱失衡中哪一项是错误的：
A．代谢性酸中毒
B．代谢性碱中毒
C．水中毒
D．呼吸性酸中毒
E．呼吸性碱中毒
参考答案：C
He felt_______ to work for human rights and progress.
A．it his duty
B．his duty
C．that is a duty
D．that is his duty
配置单层Tag的VLAN mapping时不需要配置外层VLAN的优先级。
