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【单选题】
经计算分析,()V以下的电压属于安全电压。A.
36
B.
40
C.
70
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反馈参考答案：
举一反三
【单选题】How did Master Card, became for a while the biggest card in the country?
A.
It joined with 77 other banks.
B.
It won a large group of customers over Everything Card.
C.
It began forming alliances with banks outside the state.
D.
It learned the secret of its success from California headquarters.
【简答题】"How credid card companies make money" calls for __________ process.
【简答题】How many local places accept the card?
【单选题】中国石油加油卡门户网站的网址是()
A.
www.petrochina.card.com.cn
B.
www.card.petrochina.com
C.
www.card.petrochina.com.cn
D.
www.petrochina.card.com
【简答题】How long is the card valid? For _____________ years.
【简答题】什么是载冷剂，最常用的载冷剂是什么？
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