在肾的冠状切面上可见到的结构有哪些？

阅读理解。

     Bill and Sue were brother and sister. They studied in the same school. One day, on the way-home they

saw some nice birds. But they had no money to buy them.

     Sue had a good idea. On Saturday and Sunday they went to their farm and help their father pick apples.

So their father gave them twenty dollars.

     Sue and Bill went to Mr. King's shop after school. Every one of them bought a bird. One is yellow, the

other is green. The yellow one is smaller than green one. They liked them very much.

1. Bill was Sue's _____.

A. father

B. mother

C. brother

D. sister

2. _____ they went to work for money.

A. Every day

B. After school

C. at night

D. On Saturday and Sunday

3. They helped their father _____ on the farm.

A. clean the room

B. pick apples

C. water the trees

D. cook supper

4. Bill and Sue bought _____ in Mr. King's shop.

A. two dogs

B. two apple

C. two birds

D. apples

5. The green bird was _____ than that yellow one.

A. bigger

B. cheaper

C. better

D. smaller

思维最基本的智力操作手段是______。

A．比较和分类
B．分析和综合
C．抽象与概括
D．具体化和系统化

Applet类的直接父类是( )*

A．Component类

B．Frame类

C．Container类

D．Panel类

某火电厂设有2×125MW机组，2台机以发电机变压器组接至220kV母线，220kV为双母线接线，出线2回，发电机电压为13.8kV，每台机厂用电负荷计算选择18000kVA，采用20kVA双绕组高压厂用变压器向6kV工作母线供电(每台机组分2段)，厂用高压工作变压器考虑由发电机出口引接。

由发电机出口引接的厂用分支线可( )。

A．装设不必满足动稳定要求的断路器；
B．装设断路器，若断路器开断电流不满足要求，但应采取措施仅允许在开断电流范围切除故障；
C．装设能满足动稳定要求的隔离开关或连接片；
D．B和C均可。

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