问题
选择题
I feel sure that ____ qualification, ability and experience, you are abundantly suited to the position we have in mind.
A.on account of
B.in spite of
C.by means of
D.in terms of
答案
答案:D
I feel sure that ____ qualification, ability and experience, you are abundantly suited to the position we have in mind.
A.on account of
B.in spite of
C.by means of
D.in terms of
答案:D
某同学在做测定小灯泡功率的实验中得到如下一组U和I的数据:
次序 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
U/V | 0.20 | 0.60 | 1.00 | 1.40 | 1.80 | 2.20 | 2.60 | 3.00 |
I/A | 0.020 | 0.060 | 0.100 | 0.140 | 0.170 | 0.190 | 0.200 | 0.205 |
灯泡发光情况 | 不 亮 微 亮 逐渐变亮 正常发光 |
(2)从图线上可以看出,当功率逐渐增大时,灯丝电阻的变化情况是______;这表明金属导体的电阻随温度升高而______.
(3)有一个同学在做好了上面的试验后,自己又接了一个电路,如图乙所示,经检查电路连接完全正确、接触良好,闭合电键后,发现两只灯泡中仅有一只发光.老师检查后也肯定电路连接没有问题,你认为问题可能是______.