热轧带钢表面氧化物的混合与（）关系最为密切。
A. 轧制温度
B. 轧制变形量
C. 轧后冷却速度
工伤职工因日常生活或者就业需要，经劳动能力鉴定委员会确认，可以安装假肢、矫形器、假眼、假牙和配置轮椅等辅助器具，所需费用按照国家规定的标准从（）中支付。
A. 用人单位安全措施费
B. 职工个人工资
C. 工会经费
D. 工伤保险基金
提升机电控系统在检修方式下运行，其最大速度不得超过（）。
A. 3m/s
B. 1m/s
C. 1.5m/s
D. 2m/
Why would an administrator change the value of the spanning-tree priority of a switch?（）
A. in order to optimize the path that frames take from source to destination
B. to increase the priority so a designated port will become a root port
C. to increase the BID, so the switch is more likely to become root bridge
D. in order to allow VLANs to be sent from one switch to another across a single link
E. to force a given switch to become an STP server
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