冷凝器是安装在（）
A.车前
B.车后
C.仪表室后面
D.车顶
参考答案：A
-_______ your friend look like?
- He_______ long hair.
A．What is; have
B．What does; has
C．How does; have
D．How is, has
为什么使用压缩空气清理时，必须佩带防护眼镜？
