已知点C坐标为C（10，5，25），可得点C到H面的距离为10mm。
查看答案
In the author's boyhood, he didn't have to carry keys with him if he stayed out late at night because ____________.
A. he was not allowed to carry keys with him
B. he was afraid of losing his keys
C. their front door was not locked
D. his parents would unlock the door for him
What can we infer from paragraph 2-3?
A. Nowadays, living in a suburb or country area is as safe as in a city.
B. Nowadays, doors are not unlocked either in cities or in rural areas.
C. Therehasbeenasharpriseinthenumberof suburbs and country areas.
D. The crime rate in rural areas is on the decline.
Suburbs and country areas are more dangerous than urban streets.
A. 对
B. 错
汽车维护与保养前台接待员的服务流程的内容是：
A. 维护保养预约、接车、与客户签订维修派工单；维修工交接、维护进度跟进、验车结算和送车
B. 护保养预约、接车、与客户签订维修派工单
C. 维修工交接、维护进度跟进、验车结算和送车
D. 维护保养预约、接车、与客户签订维修派工单验车结算和送车
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