以生石灰(氧化钙)、纯碱等物质为主要原料制取烧碱,试写出其中两个关键的化学方程式

题型:填空题

问题:

以生石灰(氧化钙)、纯碱等物质为主要原料制取烧碱,试写出其中两个关键的化学方程式:

(1)______

(2)______

考点:水的性质和用途化学反应方程式的书写文字表达式碱的性质
题型:填空题

根据短文内容,判断下列句子的正误,正确的用“T”,错误的用“F”。

         Summer came and the weather got hotter. Few people could go to sleep at night. They felt tired in the

daytime. They hoped to swim in the water or find a cool place. But there was no river around the town. They

had to go to the mountains. There was a large lake and it was cool there. They could have a good sleep there

or swim in the lake.

        It was Saturday. A lot of people went there for their weekend. They enjoyed themselves in the villages

and swam in the cool water. The next afternoon they had to return to their town. Bad luck! The last train came

to the station at five to six. It was fifty minutes late. There were many people on the platform (站台). They

were anxious (渴望的) to get on the train. As soon as it stopped, they tried to get on.

        The driver felt terrible at that moment. He had to take some medicine, but he couldn't find any water in

the train and had to get off. It was time to start. The train was filled to capacity (挤满). Only the driver was

still standing on the platform. There was no room for him in the train!

( ) 1. The people felt tired in the daytime because they couldn't sleep in the hot weather.

(     ) 2. People went to the mountains to have a good rest.

(     ) 3. They had to go to work on Monday, so people were anxious to get on the train.

(     ) 4. The train usually arrived at the station at a quarter past five.

( ) 5. The driver stood on the platform because he didn't take the medicine.

题型:填空题

下列有关染色体、DNA和基因关系的叙述,错误的是(  )

A.DNA位于染色体上

B.一条染色体含有一个DNA分子

C.基因是DNA分子上有遗传效应的片段

D.染色体是由DNA和基因组成

题型:填空题

细胞内有睾酮受体而细胞膜上有卵泡刺激素(FSH)受体的细胞是

A.生精细胞

B.结缔组织细胞

C.类肌细胞

D.间质细胞

E.支持细胞

题型:填空题

下列( )不属于服务营销三角形中的内容。

A.关系营销
B.外部营销
C.内部营销
D.互动营销

题型:填空题

以上各项中,依据远近配穴法取穴的是()

A.咽痛取鱼际、太溪

B.胃脘痛取中脘、胃俞

C.右侧面瘫取右颊车、左合谷

D.前额痛取头维、攒竹

E.痛经取关元、三阴交

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