A:该交流电的频率为100Hz
B:电压表的示数为155.5V
C:若将变阻器的滑片P向上滑动,则L1将变暗、L2将变亮
D:若将变阻器的滑片P向上滑动,则电流表读数变大
We have made a survey among 1,000 students from a middle school about their favorite food. students like fruits according to the form.
Kind of food
Chocolate
Banana
Cookie
Apple
Percentage(百分比)
Of the students
20%
30%
15%
?
ATP ⇌酶 ADP+Pi+能量.
一平底玻璃杯放在水平桌面上,内装150 g的水,杯子与桌面的接触面积是10 cm2,如图所示。求:(g取10 N/kg)