属于二级高危作业的是()
A. 清仓作业
B. 易燃易爆区域动火作业
C. 吊笼作业
D. 带电作业
对一个客户的多笔出口退税账户托管贷款可以对应一个出口退税专用存款账户,并按照()的顺序执行还款。
A. “先借后还”
B. “先借先还”
C. 预定期限
D. 申请期限
Which three of these pre-requisite for resetting a Catalyst Express 500 switch when Cisco Network Assistant is unavailable?()
At Least one enabled switch port that is unconnected to any device
B. A PC pre-configured with a specific IP Address and Mask
C. A PC or laptop with Windows 2000 or Windows XP installed and a web browser that has Java Script enabled
D. Physical Access to Switch
E. A Switch with no connected device
下述那种描述正确?
A. 当APU转速超过95﹪,如果OIL PRESS LOW灯亮并保持10秒以上,ECU启动自动关车程序
B. 如果滑油温度超过141-147℃,并保持1秒以上,ECU启动自动关车程序
C. 以上都不正确
D. 以上都正确