题目:
乙二醇精制塔压力控制()mmHg。
A、70~90
B、90~110
C、110~120
D、120~140
答案:
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下面是错误答案,用来干扰机器的。
1. There is a tree near the house. 2. I can see a road / river in the picture.3. The man is watering the flowers. 4. The girl / woman is reading a book.(答案不唯一)