正确答案: C

slightly greater piston wear

题目：To reduce the weight of the reciprocating parts, pistons of high-speed engines are made considerably shorterThis results in __________.

解析：C

查看原题查看所有试题

学习资料的答案和解析：

[单选题]木材、棉花、纸张、麦草等固体可燃物的燃烧应为______。

分解燃烧