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城市热岛效应的成因及其影响?

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Why is NTP an important component when implementing IPSec VPN in a PKI environment?()

A. To ensure the router has the correct time when generating its private/public key pairs.
B. To ensure the router has the correct time when checking certificate validity from the remote peers
C. To ensure the router time is sync with the remote peers for encryption keys generation
D. To ensure the router time is sync with the remote peers during theDH exchange
E. To ensure the router time is sync with the remote peers when generating the cookies during IKE phase 1

地下墙挖槽施工期间,槽内泥浆面必须高于地下水位()以上,亦不宜低于导墙顶面0.3m。

A. 1.0m
B. 1.5m
C. 0.5m

()是对提供低价代理服务的各种中间商的统称。主要经营大宗商品和粮食制品的交易。

A. 经纪人
B. 融资经纪商
C. 制造商代理人
D. 经营代理商

()is used to moor the ship to the seabed to keep it sationary.

A. The bulbous bow
B. The anchor
C. The bow thruster
D. The propeller

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