在编制施工组织设计时,()不是确定施工顺序的原则。
A.必须符合工艺要求
B.必须考虑施工进度的要求
C.充分考虑自然条件的影响
D.与施工方法、施工机具的配置相协调
参考答案:B
阅读短文,判断正(T)误(F)。
Look! This is my room. There is a big bed in it. Under the bed there is a basketball. On the wall there is a
kite. This is my desk. There are many books on it. Near the desk, there is a closet. I put my beautiful clothes in
it. What's behind the door? Oh, it's Mimi, my naughty cat. I like it very much.
( ) 1. There is a small bed in my room.
( ) 2. Under the bed there is a cat.
( ) 3. The closet is in front of the desk.
( ) 4. I have a kite in my room.
( ) 5. I like my cat.
(8分)写出下列物质的电离方程式或者化学式:
(1)硫酸__________________(电离方程式)
(2)纯碱___________________(化学式)
(3)醋酸______________________(化学式)
(4)大理石的主要成分____________(化学式)