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【单选题】
Protect Your Network, and Your Business! A security breach can result in lost productivity and compromised data. It can damage your reputation and have a negative impact (150) profitability. (151) your small business from external or internal threats with security integrated in the Integration allows you to safeguard your assets without diverting (152) resources. A Celtic Self-Defending Network can help a small business and medium-sized business: Protect company resources Secure customer information Identify both internal and external threats Prevent threats before they spread (50)
A.
about
B.
on
C.
for
D.
behind
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参考答案:
举一反三
【简答题】简述电功率和电能的区别。
【简答题】电能与电功率有什么区别?
【判断题】测量试品的绝缘电阻时,规定以加电压后1秒测得的数值为该试品的绝缘电阻值。
A.
正确
B.
错误
【判断题】测量试品的绝缘电阻时,规定加以电压后1秒测得的数值为该试品的绝缘电阻值。
A.
正确
B.
错误
【判断题】电功率和电能是两个不同的物理量。
A.
正确
B.
错误
【单选题】They overcame all the difficulties and completed the project two months ahead of time, _____ is something we had not expected. (TEM4-2003-51)
A.
which
B.
it
C.
that
D.
what
【判断题】测量试品的绝缘电阻时,规定以加电压后60s测得的数值为该试品的绝缘电阻值。( )
A.
正确
B.
错误
【简答题】简述电功率、电能的区别?
【单选题】测量试品的绝缘电阻时,规定加压后()min测得的数值为该试品的绝缘电阻。
A.
1
B.
3
C.
15
D.
60
【单选题】测量试品的绝缘电阻时,规定加压后( ) min 测得的数值为该试品的绝缘电阻。
A.
1
B.
2
C.
10
D.
60
参考解析:
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