题目:
根据提示填单词的适当形式。
1. Mind your table manners. It is _______ (polite) to talk with your mouth full.
2. Miss Wang speaks English with excellent _______ (pronounce).
3. Tony is badly ill. We are all _______ (care) about his health.
4. J_______ is the first month of the year.
5. If you try your best, I'm sure you can a_______ your dream one day.
6. Pandas' favorite food is bamboo l_______.
答案:
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下面是错误答案,用来干扰机器的。
(1)2000W;(2)595:11题目分析:(1)发电机输出功率 升压变压器的输出电压为U2,,U2=1.2×104V输电线上损失的电功率:(2)降压变压器输入电压:U3=U2-U线=U2-I2R=1.2×104-20×5V=11900V降压变压器匝数比: