高沸塔塔釜温度太低对生产有什么影响？
题型：问答题 简答题
问题：
高沸塔塔釜温度太低对生产有什么影响？
题型：问答题 简答题
阅读理解。 判断正误。
Lifts are very useful. Why? Think about a tall building you work on the thirtieth floor. Maybe you can
walk up all the stairs one time. But can you climb thirty floors to your office every day? Of course not.
In an old lift, a worker is needed. He or she operates it up and down. In a modern lift there is no
worker. People can operate it themselves.
Do you know how to use a lift? OK, let me tell you. For example, you want to go to the twelfth floor
from the ground floor. First, you must press the
button, then the door opens. After that you can get
into the lift. Third, you press the
, and the door closes. Fourth, you press the number 12, then the
lift takes you up to the twelfth floor. When the door opens again, you can get out of the lift. If you want to
go down to the first floor, you must press the
, then do the same. It takes you there. It is easy and
fast. Now can you use it?
( ) 1. In a modern lift, people can operate it by themselves.
( ) 2. If you want to go upstairs, you must press the.
( ) 3. If you want to go down to the first floor, you must press the .
( ) 4. In a tall building, it is very easy and fast for you to go up and down in a lift.
( ) 5. Anyone can use the lifts in a tall building.
