500kV变电站计算机监控系统监控系统站控层各工作站显示器的时间显示和GPS时钟间的误差应为（）
A. <=1.0秒
B. <=1.5秒
C. <=2秒
D. <=2.5秒
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Which action enables an administrator to make a VIO Server automatically activate when the physical machine is powered on?（）
A. Ensure the /etc/auto_start file exists on the VIO
B. Ensure the 'cfgdev -a boot=yes' command has been executed.
C. Select the 'Automatically start when the managed system is powered on' option within the VIO Server LPAR profile.
D. Add the VIO Server to the 'Automatically start when the managed system is powered on' field on the Managed System properties.
女，7岁，下前中切牙替换，六龄齿萌出，家长带其来医院做常规检查。此儿童的牙列分期是（）.
A. 乳牙列形成期
B. 乳牙列期
C. 混合牙列期
D. 年轻恒牙列期
E. 恒牙列期
Your ship has run aground and it is necessary to determine whether or not a compartment has floodedTherefore, you should （）.
A. open the watertight door and take a quick look
B. open the hatch dogs on the side away from the hinges
C. tap the bulkhead with a hammer to check for a water level
D. feel the bulkhead to see if it is hot
普惠制产地证中的“Origin Criterion”一栏，应根据货物原料进口成分的比例填制，“P”表示：（）
A. 无进口成分
B. 含进口成分
C. 进口成分在40%以下
D. 进口成分在50%以下
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