The two-stroke cycle begins with the piston coming...
单选题

The two-stroke cycle begins with the piston coming up from the BDC, with the scavenging ports in the sides of the cylinders being ().

发布日期:2021-03-22

A.open

B.uncover

C.covered

D.closed

热门试题

热门资讯

    暂无相关推荐~

分享给好友

分享到朋友圈

取消

使用浏览器的分享功能,把这篇文章分享出去

确定