Did Wu Yifan go fishing?[ ]
A. Yes, he did.
B. No, she didn't.
C. Yes, she didn't.
答案:A
强迫关门时,安全触板和光幕装置可以不起作用()
当外界环境温度高于人体温度时唯一的散热方式是()。
A.辐射
B.传导
C.对流
D.排泄
E.蒸发