当载荷超过额定起重量时,超载限制器应能自动切断起升动力源,并发出禁止性报警信号。
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钻进过程中立管压力表失效，数值不准确，可能会导致什么后果？
人民法院审理行政诉讼案件一般只审查行政行为的合法性。
A. 正确
B. 错误
What is not a difference between VPN tunnel authentication and per-user authentication?（）
A. VPN tunnel authentication is part of the IKE specification.
B. VPN tunnel authentication does not control which end user can use the IPSec SA (VPN tunnel).
C. User authentication is used to control access for a specific user ID, and can be used with or without a VPN tunnel for network access authorization.
D. 802.1X with EAP-TLS (509 certificates) can be used to authenticate an IPSec tunnel.
采用磷化铝粮面投药时，考虑到磷化铝吸湿潮解较慢，施药后8－10h以后开始定时环流。
A. 正确
B. 错误
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