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【判断题】
功率放大电路的主要参数是最大输出功率Pom,和效率η。A.
正确
B.
错误
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【简答题】Jeff Derevensky suggests that parents create a list of mutually acceptable options to protect children from ______.
【简答题】企业车间使用的固定资产发生的修理费应计入的会计科目是（ ）。
【单选题】You have an Exchange Server 2010 organization.You attempt to create a new address list based on each userˉs country attribut.You discover that the country attribute is unavailable in the New Address L...
A.
From the Exchange Management Shell， run the Set-AddressList cmdlet.
B.
From the Exchange Management Shell， run the New-AddressList cmdlet.
C.
From the Exchange Management Console （EMC）， create a new dynamic distribution group And then run the New Address List wizard.
D.
From the Exchange Management Console （EMC）， modify the properties of the All Users Address list and then run the New Address List wizard.
【单选题】You want to create a standard access list that denies the subnet of the following host: 172.16.50.172/20. Which of the following would you start your list with?
A.
access-list 10 deny 172.16.48.0 255.255.240.0
B.
access-list 10 deny 172.16.0.0 0.0.255.255
C.
access-list 10 deny 172.16.64.0 0.0.31.255
D.
access-list 10 deny 172.16.48.0 0.0.15.255
【单选题】The word 'offend' originally meant to strike against, but now the word signifies to create or excite anger. This is an example of ______.
A.
meaning shift
B.
widening of meaning
C.
narrowing of meaning
D.
loss of meaning
【单选题】下面关于立体的投影说法正确的是（ ）。
A.
棱柱的投影特性为底面实形，其他两面投影为三角形或复合三角形
B.
球体的三面投影为三个圆
C.
棱锥的投影特性为底面实形，其他两面投影为矩形或复合矩形圆环的三面投影为三个圆
D.
棱柱的投影特性为底面三角形，其他两面投影为实形。
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