查照间隔和护背距离的测量位置，12号60kg/m钢轨提速道岔设计图纸规定为心轨顶宽（）mm断面处。
A. 25
B. 20～30
C. 30
D. 50
查看答案
You need to design a certificate management process for internal users. What should you do？（）
A. Establish a Web enrollment service for internal users to request access to resources
B. Grant Enrollment Agent rights to users
C. Establish enrollment stations and store user certificates in a smart card
D. Create Connection Manager scripts to identify the client computer operating system， and configure Web proxy settings to specify the appropriate Web enrollment service
The most common word order in English is（）,with other sentence constituents draped around these key parts in various ways.
非机动车事故预防措施错误的是（）。
A. 不用自行车带人
B. 通过人行横道时，要注意避让行人
C. 严格遵守交通信号灯指示通行
D. 与好朋友骑车并肩而行
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