如图所示,浸没在烧杯底部的鸡蛋所受水的浮力Fl小于鸡蛋的重力.现将适量的浓盐水倒

题型:选择题

问题:

如图所示,浸没在烧杯底部的鸡蛋所受水的浮力Fl小于鸡蛋的重力.现将适量的浓盐水倒入烧杯中,鸡蛋所受的浮力为F2,则Fl与F2的大小关系为(  )

A.Fl<F2

B.Fl=F2

C.Fl>F2

D.无法确定

考点:浮力及阿基米德原理物体的浮沉条件及其应用
题型:选择题

阅读理解。

     Two words rhyme with each other when they have the same ending sound,like"think""pink". The last

word in each of the lines of a poem does not have to have a rhyming sound,many of them do. Two lines

of poetry that rhyme with each other at the end are call rhyming couplet.

     Writing rhyming poetry can be difficult because you need to choose words that not only rhyme but

have meaning,too. Even though some poems are short,you have to think extra long at which words to

choose. Here is an example of a short poem:

     He was only a bug , but he was the king.

     She smiled at him when he gave her a ring.

     He forgot to be careful of one little thing.

     His queen was a bee , and she could sting.

1. What does it mean when two words rhyme?

A. They have the same ending sound.

B. They have different ending sounds.

C. They must have the same meaning.

D. They must have different meanings.

2. Which of the following rhyme with each other in the short poem?

A. Ring and thing.    

B. Bud and king.

C. Queen and king.    

D. Bee and sting.

3. Rhyming poetry is sometimes hard to write because you need to choose _________.

A. rhyming words without meaning

B. rhyming words with meaning

C. short lines with extra long words

D. meaningful words without rhyming

题型:选择题

心悸不安,精神涣散,多由下列何种因素引起()

A.喜伤心

B.怒伤肝

C.思伤脾

D.悲伤肺

E.恐伤肾

题型:选择题

下列关于WindowsXP对话框的叙述中,错误的是()。

A.对话框是提供给用户与计算机对话的界面

B.对话框的位置可以移动,但大小不能改变

C.对话框的位置和大小都不能改变

D.对话框中可能会出现滚动条

题型:选择题

货物包装箱标志不清,有时会造成货物破损。()

题型:选择题

下列关于毛石砌体和砌块砌体施工工艺的基本规定中错误的是()。

A.毛石墙砌筑时,墙角部分纵横宽度至少0.8m

B.对于中间毛石砌筑的料石挡土墙,丁砌料石应深入中间毛石部分的长度不应小于200mm

C.毛石墙必须设置拉结石,拉结石应均匀分布,相互错开,一般每0.5m墙面至少设置一块,且同皮内的中距不大于2m

D.砌块砌体施工工艺流程为:基层处理→测量墙中线→弹墙边线→砌底部实心砖→立皮数杆→拉准线、铺灰、依准线砌筑→埋墙拉筋→梁下、墙顶斜砖砌筑

E.砌块砌体的埋墙拉筋应与钢筋混凝土柱(墙)的连接,采取在混凝土柱(墙)上打入2φ6@1000的膨胀螺栓

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