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【单选题】
下列肥料中属于生理中性肥料的是（ ）A.
碳酸氢氨
B.
硫酸铵
C.
氯化铵
D.
硫酸钾
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反馈参考答案：
举一反三
【简答题】数据结构中树和 二 叉树的定义是 定义。
【单选题】Starting with his review of Skinner's Verbal Behavior, Noam Chomsky had led the psycholinguists who argue that man has developed an innate(天生的) capacity for dealing with the linguistic universals comm...
A.
special
B.
specific
C.
definite
D.
explicit
【简答题】现在你想在学校对面开一家奶茶店,你应该怎么做?
【单选题】While hackers with motives make headlines, they represent less than 20% of all net- work security breaches. More common are instances of authorized users accidentally winding up where they should not ...
A.
Hackers and Our Defense
B.
Internet Surfers' Guide
C.
Firewall: A Measure of Network Security
D.
Information Technology
【多选题】What are two enhancements that OSPFv3 supports over OSPFv2? （）
A.
It requires the use of ARP.
B.
It can support multiple IPv6 subnets on a single link.
C.
It supports up to 2 instances of OSPFv3 over a common link.
D.
It routes over links rather than over networks.
【单选题】While logged into a Company switch you issue the following command： CompanySwitch（config-mst）# instance 10 vlan 11-12 What does this command accomplish？（）
A.
It enables a PVST+ instance of 10 for vlan 11 and vlan 12
B.
It enables vlan 11 and vlan 12 to be part of the MST region 10
C.
It maps vlan 11 and vlan 12 to the MST instance of 10.
D.
It creates an Internal Spanning Tree （IST） instance of 10 for vlan 11 and vlan 12
E.
It create a Common Spanning Tree （CST） instance of 10 for vlan 11 and vlan 12
F.
It starts two instances of MST， one instance for vlan 11 and another instance for vlan 12.
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