题干

将两个完全相同且质量分布均匀的木块分别按如图所    示的方法放入甲、乙两个相同的水槽内,放入前两水槽内水面相平,且水足够深.已知ρ<ρ,则放入木块后(水未溢出),下列说法正确的是(   )

A:甲水槽内的木块受到的浮力大

B:乙水槽底部受到水的压强大

C:甲水槽内木块排开水的体积大

D:两水槽内木块排开水的体积相等

上一题 下一题 0.0难度 选择题 更新时间:2018-12-02 04:16:43

答案(点此获取答案解析)

D

同类题5

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    You fall down on the road and a kid you barely know rushes over to help. You come home after a long day to find your dad has prepared your favorite meal. Just before lunch in social studies class, you learn about places where people don't have clean water or enough food.____They're likely to make you feel grateful.

    Gratitude (感恩) is one of many positive emotions. It's about focusing on what's good in our lives and being thankful for the things we have.____ It's taking a moment to reflect on how fortunate we are when something good happens — whether it's a small thing or a big thing.

    ____Making a habit of gratitude can also be good for us. Like other positive emotions, feeling grateful on a regular basis can have a big effect on our lives. Brain research shows that positive emotions are good for our bodies, minds, and brains.

    Positive emotions open us up to see more possibilities and take in more information. They improve our ability to develop skills, learn, and make good decisions.____ When we feel grateful for someone's kindness toward us, we may be more likely to do a kindness in return. Thanking people can make it more likely they'll do a kindness again.

    ____ When we feel and express heartfelt gratitude and appreciation to people in our lives, it creates loving bonds, builds trust, and helps you feel closer.

A. Gratitude doesn't just feel good.

B. What do these have in common?

C. Gratitude can lead to positive actions.

D. Gratitude helps us build better relationships.

E. Such kind of people are more likely to succeed.

F. We can use lots of words to describe feelings of gratitude.

G. Gratitude is stopping to notice and appreciate the things that we often take for granted.