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【简答题】
花生是最容易感染黄曲霉菌的农作物。据专家研究，花生在生长的全过程中，都有可能感染黄曲霉菌，包括在地里生长期。世界各国科学家公认，黄曲霉菌毒素是迄今为止所发现的最强的致癌物，它的理化性质相当稳定，在人体内不能降解，只能沉积在肝细胞中。当黄曲霉菌毒素沉积量超过人体的耐受力，便会引起肝脏的损伤，甚至诱发肝癌。 下列说法与原文相符的一项是 ( ) 。 A ．通过对花生极易诱发肝癌的论证，在一定程度上否定了花生的营养价值 B ．花生在生长的全过程中，都有可能感染黄曲霉菌，尤其是在地里生长期 C ．人体对黄曲霉毒素有一定耐受力，超过限度才会诱发肝癌 D ．黄曲霉菌毒素是最强的致癌物，很多癌症的发生都与其相关
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举一反三
【单选题】Which is not the physical topology of the ship-LAN?
A.
bus topology
B.
circle topology
C.
hierarchical topology
D.
mesh topology
【单选题】If each node of the network is connected into a closed loop through a repeater, this topology structure is called ______.
A.
Bus topology
B.
Star topology
C.
tree topology
D.
ring topology
【单选题】Which of the following topology situations would be a qood candidate for configuring DMVPN（）
A.
Extranet VPN
B.
Managed overlay VPN topology
C.
Hub-and-spoke VPN topology
D.
Central-site VPN topology
E.
Full mesh VPN topology
F.
Remote-access VPN topology
【简答题】The
below network configuration has a Star Topology:A. True: It is a Star Topology B. False: It is a Ring Topology
【单选题】Which kind of topology is it ?
A.
bus topology
B.
star topology
C.
ring topology
D.
hierarchy topology
【单选题】Which of these statements is true of routing protocols in a hub-and-spoke IPsec VPN topology？（）
A.
EIGRP can summarize per interface.
B.
OSPF router databases remain independent.
C.
When they are configured with stubs， EIGRP regularly floods the topology.
D.
OSPF topology decisions are made independent of hierarchy or area.
【单选题】 The network topology of hubs-based Ethernet is ().
A.
Tree Topology
B.
Network Topology
C.
Starlike Topology
D.
Ring Topology
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