你认为《哦，香雪》这篇小说包蕴着哪些方面的思想感情内涵？

便携式直流电位差计“标准”－“未知”开关合向“标准”时，若检流计始终偏向一边（接线正确），其原因可能是（）。

A、标准电池内阻过大

B、电池装反了

C、检流计内阻过小

D、电池电压过低

被誉为“风车之国”的是哪个国家？( )

A．荷兰

B．丹麦

C．英国

D．比利时

简述独立自主、自力更生与对外开放的关系。

阅读理解

     We all need a vacation, whether with the entire family or your significant other. Unfortunately, many of

us will not be able to follow through with vacation plans. But now, there is an alternative that is catching on rather quickly and it is called a "Staycation". A staycation is just what it sounds like, a vacation but you stay at home. It might not sound interesting, but you can turn it into a fun and relaxing getaway.

     Tell family and friends your plans. In their eyes you are truly on vacation and they only need to contact you in case of an emergency.

     Go outside; don't let the kids sleep all day. Go out and birdwatch, go fishing, explore the parks and

nature, take in all you can of the outside world. You can even have a relaxing day at the beach, soak in

some sun, and let the kids go swimming.

     Go on a picnic; have the kids fly kites. Bring some bubbles, and have a nice day with the wind blowing

in your hair. Watch as the kids run and play and enjoy the beautiful outdoors.

     Camping is another fun way to have a staycation. If you have a camping ground in your area, you can

go camping for a day or two and show the kids how it is to live right in the heart of Mother Nature.

     Just remember, it really doesn't matter where you decide to go, whether home or away. As long as you create quality time with your family you can strengthen the bonds that may have been pushed aside during

all the long stressful work hours. Time is the most important thing you can give to your husband, wife and

kids, enjoying every moment together, and you will have lasting memories in your hearts.

1. What is mainly talked about in the passage?

A. The popularity of a staycation.

B. The importance of a vacation.

C. Where to spend your vacation this year.

D. How to plan a staycation.

2. You should tell family and friends your plans so that       .

A. they will fully support you     

B. they will take care of your house

C. they will only contact you only when necessary

D. they can help you make preparations

3. Which of the following is NOT a good way to have a good staycation?

A. To sleep at home all day.     

B. To go out to watch birds.

C. To go to the parks.

D. To relax on the beach.

4. What is the most important thing of taking a staycation?

A. Spending quality time with your family.

B. Letting your kids learn about nature.

C. Giving your family relaxing time.

D. Getting away from stressful work hours.

5. The underlined word "bonds" in the last paragraph can be best replaced by "      ".

A. friendship   

B. health

C. ties   

D. circles

泵的型号中的首位数字表示泵的（）。

A.吸入口直径

B.泵的扬程

C.泵出口直径