同时是2和5的倍数的最小两位数是______.

题型:解答题

问题:

同时是2和5的倍数的最小两位数是______.

考点:因数,倍数,约数,公因数(公约数),公倍数
题型:解答题

下列关于胸痛诱因及缓解方式的描述,错误的是()

A.心绞痛的胸痛常因劳累诱发

B.胸壁疾病的胸痛常于胸廓活动时加剧

C.心脏神经症的胸痛在体力活动后加重

D.自发性气胸的胸痛可因深呼吸而加剧

E.反流性食管炎的胸痛服用抗酸剂可缓解

题型:解答题

能否在绿系统和黄系统之间交换液压油()

A.不能

B.能,通过动力转换组件

C.能,通过反推系统

D.能,通过刹车系统

题型:解答题

下列实验过程中始终无明显现象的是

A.二氧化氮通入硫酸亚铁溶液中

B.二氧化碳通入氯化钙溶液中

C.二氧化碳通入饱和的碳酸钠溶液中

D.氨气通入氯化铝溶液中

题型:解答题

阅读理解。

     Car sharing is another way to drive green that's gaining in popularity, especially in urban areas. People who

may not drive every day but still want a car to run errands (差事) or drive on weekends benefit most from car

sharing. Car sharing is usually run by a service like Zipcar, though there are non-profit (非营利的) and

informal car sharing services. Members pay a monthly fee and have access to an entire fleet of cars when they

need one. The cars are parked in fixed spots around the city, so members only need to make a reservation, and

then go to the pickup spot.

     Car sharing has major environmental benefits because it reduces the number of cars on the road. Members

don't drive just because they are in a car. They plan trips, and if they don't need a car, they don't use one. Still,

a car is available to them if they need to make a big trip to the grocery store, pick someone up at the airport or

if they want to go to the beach for the day. Members also benefit by having access to a car without any of the

headaches of ownership. They usually don't have to pay for the gas, insurance or maintenance (保养), and the

monthly membership fee is less than a typical car payment. So if you really want to go green but aren't ready to

totally give up a car yet, car sharing may be the way to go.

     If you still need to get around, but want to go even greener than sharing a car, share a bus!

1. The author intends to tell us that car sharing ______.

A. has become the most popular way to go to work

B. has become the best way to cut living costs

C. is becoming more and more popular in cities

D. is becoming popular both in urban and rural (乡村的) areas

2. We can conclude from the passage that ______.

A. Zipcar can't help you if you are running urgent errands

B. Zipcar, different from other services, aims green driving with no profit

C. Zipcar is a company supplying car sharing service for a monthly payment

D. Zipcar is a company providing formal car sharing free

3. The second paragraph mainly tells us ______.

A. why people will share a car

B. why car sharing benefits the environment

C. why car sharing is cheaper than owning a car

D. why a car is available to members

4. Which of the following is NOT mentioned in the passage?

A. Car sharing has become a new trend (趋势).

B. Car sharing can save you the headaches of ownership.

C. Bus sharing is even greener than car sharing.

D. Zipcar is the largest company offering car sharing services.

题型:解答题

管路系统的特性曲线是随着()的增加而上升。

A、流量

B、扬程

C、轴功率

D、效率

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