王亮家里的电能表标有“220V15A”,家里装有一台功率140W的电冰箱,一个8

题型:计算题

问题:

王亮家里的电能表标有“220V  15A”,家里装有一台功率140W的电冰箱,一个800W的电热壶,还有彩电、照明灯具等功率共为200W,天冷了王亮决定买个电热取暖器,商店里有额定功率为1000W、2000W、3000W等多种规格,根据他家用电情况:

(1)如果王亮想买个功率较大的,应买功率多大的电热取暖器?

(2)若装了取暖器后,各用电器每天平均使用2h,则一个月(30天)约用电多少?

考点:电功率的计算电功或电能的计算
题型:计算题

Do you know about the flu? The flu germs usually spread quickly. In winter, lots of people may get the flu. If you do get sick, do you know what to do? Here are some tips.

Drink lots of water. Water is good for your body especially (尤其) when you get the flu.

Get plenty of sleep and take it easy. If you can’t sleep, you can listen to music, watch a movie or read a book to relax yourself.

If you feel serious, ask your parents to take you to see the doctor. But don’t take any medicine until you see the doctor.

Wash your hands often! You certainly don’t want to spread the flu to anyone else. Also, don’t share (共用) cups and eating utensils (餐具), like forks, with other people.

Most people who get the flu may get better without going to see the doctor. They will get better in about a week. But if you have a high temperature for more than a few days, call your doctor at once.

根据短文内容,回答下列问题。

小题1:Do the flu germs spread quickly?

_______________________

小题2:What can you do to relax yourself if you can’t sleep?

_______________________

小题3:If you feel serious, what mustn’t you do before seeing the doctor?

_______________________

小题4:Why can’t you share forks with others if you get the flu?

_______________________

小题5:How long does the flu usually last?

_______________________

题型:计算题

以下哪些表现提示严重颅内压增高()

A.一侧肢体瘫痪

B.共济失调

C.意识淡漠

D.躁动

E.颈项强直

题型:计算题

母儿血型不合分娩时应注意的事项有哪些:

A.立即断脐

B.脐静脉内注入葡萄糖、维生素C、地塞米松

C.保留脐带10cm

D.立即行脐静脉插管

E.取脐血后向试管内挤脐血

题型:计算题

在同一时间内,对不同年龄组被试进行观察、访谈、测量、试验,以探究儿童发展的规律或特点的是()。

A.横向设计

B.纵向设计

C.交叉设计

D.跨文化研究设计

题型:计算题

起飞时ECAM上不会显示WING TK LO LVL警告的最小燃油量是()

A.1500kg

B.1700kg

C.1800kg

更多题库