将图中的元件连接起来,要求: (1)灯泡L1和L2并联; (2)电流表A1测灯泡

题型:操作题

问题:

将图中的元件连接起来,要求:

(1)灯泡L1和L2并联;

(2)电流表A1测灯泡L1中的电流;

(3)电流表A2测干路电流;

(4)用笔划线作导线连接时导线不要交叉;

(5)开关S可同时控制两只灯泡。

考点:电路的连接电流的测量,电流表的使用及读数方法
题型:操作题
A little old man and his wife walked slowly into McDonald’s 16 a cold-winter evening. They took a table near the back wall, and then the little old man walked to the cash register (收银处)to order. After a while he got the food back and they began to 17 it.
There was one hamburger, some French fries and one drink. The little old man carefully cut the hamburger into halves and 18 the French fries in two piles. Then he neatly put the 19 of the food in front of his wife. He took a sip of the drink and his wife took a sip. "How20 the old people are!" The people around them thought.
21 the man began to eat his hamburger and his French fries, his wife sat there 22 him and took turns to drink. 23 young man came over and offered to buy another meal for them. But they refused  24 and said that they got used to 25 everything.
Then a young lady asked the little old lady a question. "Madam, why aren’t you eating? You said that you shared everything. Then what are you waiting for?" She answered, "The teeth.”
小题1:
A.for B.at C.in D.on
小题2: A. eat    B. taste    C open D. try
小题3:
A.divided B.placedC.changed D.cut
小题4:
A.half B.bit C.pieceD.pair
小题5:
A.cleverB.foolishC.oldD.poor
小题6:
A.Because B.As C.So D.Before
小题7:
A.keeping B.watchingC.seeing D.holding
小题8:
A.Another B.The otherC.Other D.A
小题9:
A.delightedly B.carefullyC.politely D.angrily
小题10:
A.share B.sharing C.enjoy D.enjoying
题型:操作题
已知a=
3
-1
,求a3+3a2+1的值.
题型:操作题

某山区实施退耕还林之后,群落经过数十年的演替发展为树林。下图甲、乙、丙分别表示群落演替的三个连续阶段中,优势植物种群数量变化情况。下列说法中错误的是

[ ]

A.实施退耕还林等措施之后,可增大部分野生动植物种群的环境容纳量

B.甲、乙、丙之间为竞争关系,第3阶段群落具有明显的垂直分层现象

C.演替中后一阶段优势物种的兴起,一般会造成前一阶段优势物种的消亡

D.该过程中,群落的物种丰富度和生态系统的抵抗力稳定性会逐渐提高

题型:操作题

文教科学卫生单位的收入定额主要包括()。

A.补偿性收入定额 

B.生产性收入定额 

C.创造性收入定额 

D.结转性收入定额 

E.代办性收入定额

题型:操作题

新建商品房进行目标客户定位时,根据片区现有写字楼客户的调查分析,将主流行业、主流发展规模、主流来源区域的企业作为( )。

A.重要客户群锁定

B.项目核心客户群

C.游离客户群界定

D.无效客户群

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