All three systems have the ports () to swirl the incoming air and direct it in the appropriate path.
时间:2019-12-10 00:16:12 关键词:ports,the,swirlAll three systems have the ports () to swirl the incoming air and direct it in the appropriate path.
A.angled
B.rounded
C.being angled
D.being rounded
答案解析
D
举一反三