处理化学液体时,应用保护面部。()
A.太阳镜
B.防护面罩
C.毛巾
D.口罩
参考答案:B
--- , Miss Wang worked as a CEO.
----Wow! She is so great.
A. In the thirties B. In her thirty C. In her thirties
木材的构造分为()和()。