电力职工在各自岗位上、在各项工作中认真贯彻“以安全为基础，以效益为中心”的生产方针，强化安全管理，为安全生产服务。（）
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在机械制图中的透视图是用（）绘制的。
A. 中心投影法
B. 斜投影法
C. 正投影法
D. 平行投影法
厚表皮中厚度最厚的细胞层是（）。
A. 角质层
B. 透明层
C. 颗粒层
D. 棘层
You need to design a method of communication between the IT and HR departments. Your solution must meet business requirements. What should you do？（）
A. Design a custom IPSec policy to implement Encapsulating Security Payload （ESP） for all IP traffic Design the IPSec policy to use certificate-based authentication between the two departments’ computers
B. Design a customer IPSec policy to implement Authentication Header （AH） for all IP traffic. Desing the IPSec policy to use preshared key authentication between the two departments’ computers
C. Design a customer IPSec policy to implement Encapsulating Payload （ESP） for all IP traffic. Desing the IPSec policy to use preshared key authentication between the two departments’ computers
Design a customer IPSec policy to implement Authentication Header （AH） for all IP traffic. Desing the IPSec policy to use certificate-based authentication between the two departments’ computer
轴承座应无裂纹、夹渣、铸砂、重皮、气孔等缺陷。
A. 正确
B. 错误
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