如图所示是学习电磁现象过程中做过的几个实验,其中能反映发电机工作原理的是 [ ]

题型:选择题

问题:

如图所示是学习电磁现象过程中做过的几个实验,其中能反映发电机工作原理的是

[ ]

A.甲图是给带有铁芯的线圈通电,它能吸住铁片及重物

B.乙图中电流通过小磁针上方的直导线时,小磁针发生偏转

C.丙图中闭合开关,铜棒ab中有电流通过时,它就会运动起来

D.丁图中闭合开关,使导体AB沿箭头所示方向左右摆动,电流表指针发生偏转

考点:电磁感应的应用(动圈式话筒、发电机)
题型:选择题

单词拼写。

1. Read the ________(说明) on the bottle before you take the medicine.

2. Medicine should not be kept where it is ________(可得到的) to children.

3. The empty boat was_________(漂浮) on the sea.

4. Only those with college _________(文凭) will be accepted by the company.

5. He did his homework __________ (立即)after lunch.

6. We watched a wonderful football match in the _________ (体育馆) yesterday.

7. Only two passengers__________(幸免于难)the air-crash.

8. The debate did not come to a _________(结论)until midnight.

9. This idea is _________ (相似地) expressed in his most recent book.

10. He _________ (承认) having broken the window.

题型:选择题

在玉米种子的纵切面上滴加碘液后,在纵切面上遇到碘液会变成蓝色的结构是[ ]

A.胚乳

B.子叶

C.胚芽

D.胚

题型:选择题

在C盘中有一个名为temp.txt的文本文件。
#include <stdio.h>
#include <stdlib.h>
main()
int i,n;
FILE*fp;
if((fp=fopen("c:\\temp.txt","w+"))==NULL)
printf("can not set the temp file\n");exit(0);
for(i=1;i<=10;i++)fprintf(fp,"%3d",i);
for(i=0;i<5;i++)
fseek(fp,*6L,SEEK_SET);
fscanf(fp,"%d",&n);
printf("%3d",n);

fclose(fp);

题型:选择题

接待外国旅游团时,导游服务工作具有涉外性。其涉外性主要表现在()

A、宣传祖国

B、发挥民间大使作用

C、了解外国

D、就地出口商品

题型:选择题

(A) 条件(1)充分,但条件(2)不充分.
(B) 条件(2)充分,但条件(1)不充分.
(C) 条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
(D) 条件(1)充分,条件(2)也充分.
(E) 条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.

[*]
What is the length of side AC of triangle ABC
(1) AB=13 and BC=5
(2) x+y=90

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