掘进工必须熟知井下避灾路线,正确的进行自救互救和安全脱险。
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掘进工作面的进风流中,氧气浓度应不低于20%,二氧化碳浓度不超过0.5%。
A. 正确
B. 错误
当散热器布置在窗台下时,散热器中心须和窗口中心一致,偏差不超过()。
A. 20mm
B. 30mm
C. 40mm
D. 50mm
调查组在实施反洗钱调查前,必须提前通知金融机构,要求其进行相应准备。
A. 正确
B. 错误
Cisco Express Forwarding (CEF) is mainly used to increase packet switching speed, reducing theoverhead and delays introduced by other routing techniques, increasing overall performance.Which of the following concerning CEF is recommended by Cisco?()
A. Use default Layer 4 hash in core.
B. Use default Layer 3 hash in distribution.
C. Use default Layer 4 hash in distribution.
D. Use default Layer 3 hash in core and Layer 3 + Layer 4 hash in distribution layer.