在除法中,如果被除数除以l0,除数也同时除以l0,商______.

题型:填空题

问题:

在除法中,如果被除数除以l0,除数也同时除以l0,商______.

考点:和差积商的变化规律
题型:填空题

(二)


Many people who work in London prefer to live outside it, and to go in to their offices or schools every day by train, car or bus, even though this means they have to get up early in the morning and reach home late in the evening.
One advantage of living outside London is that houses are cheaper. Even a small flat in London without a garden costs quite a lot to rent. With the same money, one can get a little house in the country with a garden of one’s own.
Then, in the country one can rest from the noise and hurry of the town. Even though one has to get up earlier and spend more time in trains or buses, one can sleep better at night and during weekends and on summer evenings, one can enjoy the fresh, clean air of the country. If one likes gardens, one can spend one’s free time digging, planting, watering and doing the hundred and one other jobs which are needed in a garden. Then, when the flowers and vegetables come up, one has the reward of one who has shared the secret of Nature.
Some people, however, take no interest in country things: for them, happiness lies in the town, with its cinemas and theatres, beautiful shops and busy streets, dance-halls and restaurants. Such people would feel that their life was not worth living if they had to live it outside London. An occasional walk in one of the parks and a fortnight’s (two weeks) visit to the sea every summer is all the country they want: the rest they are quite prepared to leave to those who are glad to get away from London every night.

One can use the same money for ______ to buy a little house with a garden in the country.

A.getting a small flat with a garden

B.having a small flat with a garden

C.renting a small flat without a garden

D.buying a small flat without a garden

题型:填空题

如图所示,电阻R1=20Ω,电动机内阻的阻值R2=10 Ω。当开关打开时,电流表的示数是I0=0.5A,当开关合上后,电动机转动起来,电路两端的电压不变,电流表的示数I和电路消耗的电功率P应是

[ ]

A.1=0.5 A

B.1<1.5 A

C.P=15 W

D.P<15 W

题型:填空题

下列哪种通信是以“光”为载体传播的[ ]

A.光纤通信

B.卫星通信

C.微波通信

D.手机通信

题型:填空题

井底打开式虹吸测斜仪由内筒和()两部分组成。

A、控制室

B、记录室

C、外筒

D、储存室

题型:填空题

对儿童进行乙型肝炎疫苗接种的实验研究,为评价其流行病学预防效果,应选用的指标是

A.发病率
B.死亡率
C.效果指数
D.病死率
E.感染率

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