问题
单项选择题
配气机构的气门组主要由（）、气门导管、气门座等组成。
A、气门、气门弹簧
B、气门、凸轮轴
C、凸轮轴、挺柱
D、摇臂轴、推杆
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
配气机构的气门组主要由（）、气门导管、气门座等组成。
A、气门、气门弹簧
B、气门、凸轮轴
C、凸轮轴、挺柱
D、摇臂轴、推杆
参考答案：A
五位同学遇到了学习或生活上的问题，请你为他们选出相对应的建议。
| Problem | Suggestions(建议) | ||
| 71 | Lily thinks that all the problems that may happen to her tomorrow, next week, next year | A | Revise for your test; make sure you will work harder. |
| 72 | I feel lonely and it seems people around don’t want me. | B | Sit down, and write down the money you spend on different things, over a week. It will surprise you. |
| 73 | I’m afraid that I will not pass the exam. | C | Sometimes, the fear(恐惧) of something is worse than the thing itself! Perhaps tomorrow, the problem may seem less! |
| 74 | Dick has the money problem. He can’t buy what he wants. | D | Make a “To Do List”: “A” must be done today. “B” can be left until tomorrow. “C” can be left for some days. “D” is it really necessary? |
| 75 | Lisa worries about her work a lot. | E | To be wanted and needed, is a big answer to loneliness.(孤独) |