单缸四冲程内燃机工作时,依靠飞轮的惯性来完成的冲程有[ ] A.吸气、做功和排气 发布时间:2017-08-04 16:16 │ 来源:www.tikuol.com 题型:选择题 问题: 单缸四冲程内燃机工作时,依靠飞轮的惯性来完成的冲程有[ ]A.吸气、做功和排气冲程 B.吸气、压缩和做功冲程C.压缩、做功和排气冲程D.吸气、压缩和排气冲程
题型:选择题 They had ___________ lunch and then ran to school. [ ]A. quickly B. quick C. a quick D. quicker 查看答案
题型:选择题 — Good morning. I've got an appointment with Miss Smith in the Personnel Department. — Ah, good morning. You ______ be Mrs Peters. [ ]A. might B. must C. would D. can 查看答案