防止某些病原菌对皮肤的感染与（）有关。
A、皮脂膜
B、皮下脂肪
C、表皮渗透吸收能力
D、皮肤角质层更新速度
参考答案：A
— Did you know more about the mine accident?
— Oh, sorry, I had no idea.I ________the Rescue Center now. [ ]
A. will be phoning
B. am to phone
C. will phone
D. phone
仪表串级调节的投用方法为先投主环后投副环。
