问题
问答题 简答题
炼油生产对所使用的循环冷却水有何要求？
答案
参考答案：
（1）水温要尽可能降低。
（2）水质不易结垢。
（3）不易产生各种腐蚀。
（4）不易生成菌藻滋生的环境条件。
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炼油生产对所使用的循环冷却水有何要求？
参考答案：
（1）水温要尽可能降低。
（2）水质不易结垢。
（3）不易产生各种腐蚀。
（4）不易生成菌藻滋生的环境条件。
| 根据短文内容从方框内选择正确的词，并用适当的形式填空，使短文在结构和意义上完整、通畅。 | |
Everyone ____1____ friends. We all like ___2___ close to someone. It is nice to have friend to talk and ___3___ things with. Certainly, sometimes, we need to be ___4____ . We don't always want people around. But a man will feel lonely if he ____5____ a friend. No two people are just the same . Friends sometimes don't get on ____6___ . That doesn't mean that they no longer like each other . Most of the time , they will make up and become friends again. There ___7____ more good news for people who have friends . They live longer than people who don't . Why? It could be that they are ___8____ . Being happy ___9___ you stay well . Or it could be just knowing that someone cares. If someone cares about you, you take better care of ___10____. |