有一只灯泡,正常工作时的电压为8V,电阻为10Ω,若将它接在10V的电源上,为使

题型:填空题

问题:

有一只灯泡,正常工作时的电压为8V,电阻为10Ω,若将它接在10V的电源上,为使其正常工作,应______联一个阻值为______Ω的电阻才行.

考点:电阻的串联欧姆定律及其应用
题型:填空题

阅读理解。

      Early rising is helpful in more than one way.

      First, it helps us to have good health. We all need fresh air. It makes our health better to take morning

exercises. The air is never so fresh as early in the morning.

      Early rising helps us in our studies. In the morning we learn more quickly and find it easy to learn something

by heart.

      Early rising makes people able to plan the work for the day. We can't work well without a good plan. Just as

the plan for the year should be made in the spring, the plan for a day should be made in the morning.

      Early rising gives us enough time to get ready for our work, such as to wash our hands and eat our

breakfast.

      So the popular saying says, "Early to bed and early to rise makes a man healthy, wealthy and wise."

1. What does "early rising" mean? It means _______ early in the morning. [ ]

A. waking up

B. getting up

C. have breakfast

D. making a day's plan

2. Why does the passage advise us to take exercises early in the morning? [ ]

A. Because we can save much time.

B. Because we are not busy in the morning.

C. Because air in the morning is very fresh.

D. Because we don't need to prepare for breakfast.

3. We can work well with _______. [ ]

A. enough time

B. a good reading

C. clean hands

D. a good plan

题型:填空题

在每天排便的情况下,消化道积血最快几天排尽()

A.1天

B.3天

C.5~7天

D.10天

E.12天

题型:填空题

受淹没影响的文物古迹,经以下哪级专业主管部门鉴定后,有特殊保存价值的,提出搬迁、发掘或防护的处理措施。()

A.国务院

B.省级以上

C.地区级以上

D.县级以上

题型:填空题

体育课堂教学设计

题型:填空题

论述因材施教的教学原则。

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