问题
问答题 简答题
锅炉用水的主要评价指标有哪些？它们的单位是什么？
答案
参考答案：
主要有悬浮物、碱度、硬度、含盐量、PH值、溶解氧、含油等。碱度、硬度的单位是mmol/l或μg/l。
搜题请搜索小程序“爱下问搜题”
锅炉用水的主要评价指标有哪些？它们的单位是什么？
参考答案：
主要有悬浮物、碱度、硬度、含盐量、PH值、溶解氧、含油等。碱度、硬度的单位是mmol/l或μg/l。
| 阅读理解。根据短文内容判断下列句子的正(T)和误(F)。 | |
children in. Soon the plane begins up. Joan looks out of the window. " Oh, we're just like birds in the sky! " she says. She looks at the houses, but they are like toy houses. Mike looks out of the windows, too. He sees some buses. They look like toy buses. The people on the ground (地面) look very, very small, too. Then the plane comes down and down, and stops on the ground. Mike and Joan are very happy. ( ) 1. Mr. Baker takes Mike and Joan to a plane, because they are going to school. ( ) 2. The children see some birds in the sky. ( ) 3. Seen from the sky, the houses look like toy houses. ( ) 4. The children can see men and women on the ground. ( ) 5. They have a good time in the plane. |