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【单选题】
ARP 请求报文中的发送端IP地址和发送端MAC地址为主机A的IP地址和MAC地址,目标IP地址和目标MAC地址为主机B的IP地址和()的MAC地址。A.
B 的MAC地址
B.
“00:00:00:00:00”
C.
A 的MAC地址
D.
“ff:ff:ff:ff:ff”
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【简答题】法兰支架组合体【题目】根据给定图纸,用UG绘制三维模型并回答问题。 【参数】A=88 B=67 C=11 D=11 【问题】 1.黄色区域面积是多少? 2.紫色区域面积是多少? 3.模型的体积是多少? 【注意】 1.图中没有注明的尺寸按照对称、均匀分布处理; 2.答案空格与问题顺序一一对应; 3.答案保留两位小数点,不要带单位。 【题图】
【单选题】The annual worth of a permanent investment can be determined from its capitalized cost by________________.
A.
Using the A/P factor for a large n value
B.
Same each period
C.
Dividing by i.
D.
Multiplying by i.
【单选题】When comparing different-life alternatives by the annual worth method, the annual worth calculated using their LCM of lives will be the same as that calculated over one________________.
A.
Two life cycles of each one
B.
Same each period
C.
Study period
D.
Life cycle only
【判断题】The equivalent annual worth of unequal-life alternatives can be determined by first calculating their present worth for one life cycle and then multiplying that value by the A/P factor for their LCM.
A.
正确
B.
错误
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