激光加工中心可做旋转打标的设备有() A.灯泵YAG激光打标机 B.半导体泵浦YAG

题型:多项选择题

问题:

激光加工中心可做旋转打标的设备有()

A.灯泵YAG激光打标机

B.半导体泵浦YAG激光打标机

C.CO2激光打标机

D.CO2激光飞行打标机

考点:激光能激光加工技术激光加工技术题库
题型:多项选择题

心肺复苏时急救者在电击后应

A.立即检查心跳或脉搏

B.先行胸外按压,在5组(或者约2分钟)心肺复苏后再进行心跳检查

C.立即进行心电图检查

D.调节好除颤仪,准备第二次除颤

E.立即检查瞳孔变化

题型:多项选择题

Once a man and his wife worked for an old man. There was a big box in the old man’s living room. The old man pointed to the box and said, "There’s only one thing you (1) do. Don’t open the box. " (2) saying this, he left his home.The woman said to her husband," There must be (3) expensive in the box. Let’s open it, shall we" Her husband said (4) to her. But the woman didn’t give up her (5) . One day, she decided to find out (6) was in it. Her husband didn’t stop her. She opened the box and looked inside. To her surprise, she found nothing in the box. She tried hard to close it, but she (7) That evening the old man came home and found the box was (8) . He was very (9) and asked the woman and her husband to leave his home."But there was nothing in the box," the woman said. "We haven’t taken anything at all. "The old man (10) them, "The box is not important, but I cannot believe you. That’s important!

 

第(3)空应选择()

A.nothing

B.everything

C.something

D.anything

题型:多项选择题

三七的伪品为

A.大丽菊
B.参薯
C.山莴苣
D.红药子
E.蓬莪术

题型:多项选择题

结合自己的工作岗位,谈谈如何能够成为一名合格的绞车司机?

题型:多项选择题

变速器装配中,以下操作错误的是()。

A.清洗所有零件

B.各齿轮和轴涂发动机油后再组装

C.更换个别已损坏的旧挡圈

D.在左、右合箱接合面涂密封胶

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