转盘滚子补心、锁紧装置、防跳轴承每()小时注润滑脂一次。
A、100
B、200
C、500
D、700
参考答案:C
阅读下面短文,从方框里的七个选项中,选择五个还原到文章中,使文章意思通顺,结构完整。
Do you have any friends? You may say “yes”.小题1:__________Boys think their friends must be boys and girls must have girl friends.小题2:_________.
Your classmates can be your friends. 小题3:_________ For example, you like playing sports, and your classmate also likes playing sports. Then can be friends.
Your teachers can be your friends. Teachers can give you help in your studies.小题4:___________.
Your parents can be your friends. They can play with you. 小题5:__________. They love you and give you all they have.
运输途中发生运输票据丢失时,丢失单位或处理站应编制普通记录继运到站,并及时()向有关站查询,全列车运输票据丢失时,还应于当日上报主管铁路局。