在维护修理发动机为防止发生人为故障你应该怎做?
参考答案:
维护修理中必须做到:
1、清洁;
2、调整;
3、防松;
4、不错装;
5、不漏装;
6、防磕碰;
7、防摔伤。
找出与划线部分意思相同的部分。
Is this your favorite city? [ ]
A.Do you often visit the city?
B.How often do you visit the city?
C.Do you like the city very much?
填埋场区中,甲烷气体的含量不得超过5%;建(构)筑物内,甲烷气体含量不得超过1.25%