机动车在狭窄的坡路会车时,正确的会车方法是什么A.下坡车让上坡车 B.坡顶交会时距离

题型:单项选择题

问题:

机动车在狭窄的坡路会车时,正确的会车方法是什么

A.下坡车让上坡车

B.坡顶交会时距离坡顶远的一方

C.上坡车让下坡车

D.下坡车已行至中途而上坡车未上坡时,让上坡车

考点:机动车驾驶人考试安全文明驾驶常识考试(科目三科目四)客车
题型:单项选择题

(1)航天飞机曾用金属铝粉和高氯酸铵混合物作为固体燃料.加热铝粉使其氧化并放出大量热量,促使混合物中另一种燃料分解.m mol高氯酸铵分解时除产生2m mol水蒸气和m mol氧气外,其他组成元素均以单质形式放出,因而产生巨大的推动力.写出其中涉及到的化学方程式:______;

(2)高氯酸铵作为火箭燃料的重要氧载体.高氯酸铵在高压、450℃的条件下迅速分解生成水蒸气、氮气、氯化氢和氧气.

①写出此反应的化学方程式______;

②反应中生成的氧化产物与还原产物的物质的量之比是______,每分解1mol高氯酸铵,转移的电子数目是______.

题型:单项选择题

幂函数f(x)的图象在第一、三象限,且f(3)<f(2),则下列各式中一定成立的是(  )

A.f(-3)<f(-2)

B.f(-3)>f(-2)

C.f(-3)>f(2)

D.f(3)<f(-2)

题型:单项选择题

因式分m2-7m+10=______.

题型:单项选择题

You have a nice salary, but you still feel short of money. At the end of each month, you often ask yourself, “Where has all my money gone”? To help you better run your salary, here come some money-saving tips.

First, you need to set goals to encourage yourself to save money. For example, you plan to have a good dress in one year, to have a car in two years’ time or to buy a house in five years.

Second, form money-saving habits and stay away from the ones that waste money. Learn to keep a diary of how much you spend and what it’s for. Think twice before using money on expensive skin care products(护肤品). The best way to keep your skin in good condition is enough sleep.

Third, pay attention to your daily things. Leave no more than one light on when you leave home. Buy vegetables from a market where vegetables are less expensive and fresher, not a supermarket. When going to a supermarket, take a notebook with you. Write down what you want to buy.

Fourth, save your social life. Take the dishes that haven’t been eaten up away for next day when you have dinner in a restaurant. When it’s your turn to offer a meal, invite your friends to your home, and cook the dinner yourself. If you are to attend a party and an expensive present is needed, ask several friends to go together to share a present.

小题1:The passage is mainly about          .

A.four ways to save money

B.how to set goals to save money

C.where to keep money

D.how to live well with little money小题2:Which of the following does the author favor?

A.Have some good skin care products.

B.Enough sleep does good to skin.

C.All things in supermarkets are expensive.

D.Vegetables in a market taste good.小题3:If you want to save money, you should           .

A.have dinner in a restaurant

B.buy dishes in a restaurant and eat at home

C.invite friends home and cook yourself

D.attend a party alone小题4:Which of the following is NOT suggested by the author?

A.Making a plan saving money.

B.Forming habits of saving money.

C.Cutting down the prices when buying things.

D.Leaving few lights on when you leave home.

题型:单项选择题

爆破器材管理人员应及时将过期变质的爆破器材就地销毁。

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