内注式液压支柱靠（）降柱。A.自重 B.复位弹簧 C.手摇泵 D.手轮

根据短文内容，判断正（T）误（F）。

　　Tom works in a supermarket. The supermarket is far from his house. He

gets up very early in the morning. He usually has breakfast at half past six and

takes a bus to work. He has lunch in the supermarket. He has supper with his

family at home. After supper he usually walks along(沿着) the river with his

wife. At seven he watches TV or listen to the music .

　　Tom likes his work very much. He is always kind to others. And all his

friends love him, too. They work happily.

( ) 1. Tom is a worker in a supermarket .

(     ) 2.Tom's house isn't far from the supermarket .

(     ) 3. He doesn't have lunch with his family .

(     ) 4. He is a good worker.

(     ) 5. Few of his friends like him.

阅读理解。

     Li Ming is a school boy. He is twelve. He lives in Shijiazhuang. He studies in the No.3 Middle School. He gets

up at 5:30 every day.He reads English and Chinese in the morning. He has breakfast at seven.After that, he goes

to school with his friends.They have four classes in the morning and two in the afternoon.In the evening he

does his homework at home.But he often watches TV on Saturday evening. Li Ming likes drawing.He draws

better than his sister. He likes reading English books.Now he is reading an English book in the room.

1. Li Ming is a _____.

A. student

B. girl

C. teacher

D. doctor

2. Li Ming has _____ classes at school every day.

A. four

B. two

C. six

D. five

3.Li Ming does his homework _____.

A. in the evening

B. at school

C. in the morning

D. in the afternoon.

4. Li Ming watches TV on _____ evening.

A. Sunday

B. Saturday

C. Friday

D. every evening

5. Li Ming likes _____.

A. English and Chinese

B. playing football

C. growing flowers

D. drawing and reading

实验：

（1）(4分)右图为实验室某浓盐酸试剂瓶标签上的有关数据，试根据标签上的有关数据回答下列问题：

①该浓盐酸中HCl的物质的量浓度为_________mol·L^-1。

②取用任意体积的该盐酸溶液时，下列物理量中不随所取体积的多少而变化的是_________ 。

A.溶液中HCl的物质的量    B.溶液的浓度   

C.溶液中Cl^-的数目         D溶液的密度

(2).（8分）实验室配制480mL0.08mol/LNa₂CO₃溶液回答下列问题

①应用托盘天平称取十水碳酸钠晶体_______g

② 若在称量样品时,药品放在天平右盘上,砝码放在天平左盘上,天平平衡时,则实际称量的碳酸钠晶体是______g(1g以下用游码)

③用容量瓶配制一定物质的量浓度的溶液，该容量瓶必须是        

　　A、干燥的　　B、瓶塞不漏水　C、用欲配制的溶液润洗过　　D、以上三项都要求

④若实验遇下列情况,溶液的浓度是“偏高”、“偏低”还是“不变”?

A.加水时越过刻度线_________

B.忘记将洗涤液加入容量瓶__________

C.容量瓶内壁附有水珠而未干燥处理____________

D.溶解后没有冷却便进行定容______________

（3）(8分)①取少量Fe₂O₃粉末(红棕色)加入适量盐酸，反应的离子方程式为______________，反应后得到黄色的FeCl₃溶液。用此溶液做以下实验：

②取少量溶液置于试管中，滴入NaOH溶液，看到有红褐色沉淀生成，反应的离子方程式为____________________________________。

③在小烧杯中加入25 mL蒸馏水，加热至沸腾后，向沸水中加入2 mL FeCl₃饱和溶液，继续煮沸至溶液呈________色，即可制得Fe(OH)₃胶体。

④另取一小烧杯加入25 mL蒸馏水后，向烧杯中再加入2 mL FeCl₃饱和溶液，振荡均匀后，将此烧杯(编号甲)与盛有Fe(OH)₃胶体的烧杯(编号乙)一起放置暗处，分别用激光笔照射烧杯中的液体，可以看到________(填甲或乙)烧杯中会产生丁达尔效应。此实验可以区别        

试述腹股沟斜疝和直疝的鉴别。

为了控制基站的覆盖范围，同时保证提供足够的功率需求，通常通过修改以下哪个参数解决？（）

A、导频信道增益

B、基带增益

C、射频增益

D、业务信道增益