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冬季登高作业使用梯子、渡板前必须(),禁止(),并清除踏板和底部冰雪。

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()还可以根据酶破胶剂的最佳活性范围调节出合适的PH值,使破胶剂发挥最大的破胶能力。

A. 稳定剂
B. 起泡剂
C. PH值调节剂
D. 破乳剂

Intel的CPU中的外频与前端总线的关系为FSB=外频*4、AMD的CPU中的外频与前端总线的关系为()。

当基牙牙槽骨的吸收程度超过其根长_______,或牙松动度在_______度以上时,应考虑增加基牙。

Your company has a main office and one branch office. All servers run Windows Server 2003 Service Pack 2 (SP2).The main office has a third-party gateway device named Gateway1. Gateway1 is connected to the internal network and the Internet. Gateway1 supports IPSec. In the branch office, you have a server named Server1. You create an IPSec policy on Server1.You need to ensure that Server1 can establish an IPSec tunnel to Gateway1. What should you use to configure the IPSec policy?()

A. an IP filter that allows only Internet Control Message Protocol (ICMP) traffic
B. an IP filter that allows only TCP traffic on port 1701
C. a pre-shared key for authentication
D. Kerberos authenticatio

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