题目内容

单纯固定液广泛用于酶组织化学方法中的各种酶固定的是()

A. 冷丙酮
B. 乙醇
C. 苦味酸
D. 锇酸
E. 醋酸

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整个10Base-T以太网系统由集线器、网卡、()组成。

在流行病学调查中,可用于细菌分型的合成代谢产物是()。

A. 热原质
B. 侵袭性酶类
C. 毒素
D. 色素
E. 细菌素

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 thebranch 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 authentication.

晶体管共基极电路有哪些特征?

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