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【多选题】
Which statements are true concerning NAT？ （）A.
NAT provides 1 to manyaddress mapping.
B.
NAT provides 1 to 1 address mapping.
C.
NAT is only useful forTCP/UDP and ICMP traffic.
D.
NAT can be used for all IP traffic.
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反馈参考答案：
举一反三
【判断题】In the age of cell phones, telephone etiquette has largely gone by the wayside.
A.
正确
B.
错误
【单选题】Local persons display their handicrafts on the wayside.
A.
behave
B.
show
C.
perform
D.
outcome
【单选题】Shipping society approved buoyant work vests are considered to be items of safety equipment and may be worn by members of the crew ______．
A.
in lieu of life preservers during fire drills
B.
in lieu of life preservers during boat drills
C.
in lieu of life preservers during an actual emergency
D.
when carrying out duties near a weather deck's edge
【单选题】Which of the following is a cost of inputs to production?______.
A.
Rental rate for equipment
B.
Wage rate for employees
C.
Raw materials
D.
All of the above
【简答题】某建筑面积为 23000m2的18层住宅工程,施工现场供、配电干线采用架空线路敷设,支线及进楼电源采用铠装电缆直埋。 (1)该背景中明敷绝缘导线长期连续负荷允许载流量为215A.架空线路短路保护采用熔体额定电流200A的熔断器,该方案是否可行?为什么? (2)材料部门采购了四芯铠装电缆到现场,技术部门为了保证TN-S三相五线制供电,决定采用四芯铠装电缆外敷一根塑铜线(BV)方式敷设,是否可行? (...
【单选题】The phrase 'fall by the wayside' (Para. 2) most probably means _____.
A.
give up
B.
break down
C.
drop off
D.
fall over
【简答题】What's the structure of signal wayside safety relay?
相关题目：
【单选题】Local persons display their handicrafts on the wayside.
A.
behave
B.
show
C.
perform
D.
outcome
参考解析：
知识点：
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