设一个小物体在一个大空间中可以到达的部分空间与整个空间的体积的比值为可达率,现用

题型:选择题

问题:

设一个小物体在一个大空间中可以到达的部分空间与整个空间的体积的比值为可达率,现用半径为1的小球扫描检测棱长为10的正方体内部,则可达率落在的区间是[ ]

A.(0.96,0.97)  

B.(0.97,0.98)  

C.(0.98,0.99)  

D.(0.99,1)

考点:几何概型的定义及计算
题型:选择题

容量大于()立方米的消防水池,应分设两个能独立使用的消防水池。

A、200

B、300

C、400

D、500

题型:选择题

阅读理解。

    People in the United States honor their parents with two special days: Mother's Day, on the second Sunday

in May, and Father's Day, on the third Sunday in June. These days are set aside to show love and respect for

parents. They raise their children and educate them to be responsible citizens. They give love and care. These

two days make us think about the changing roles of mothers and fathers. More mothers now work outside the

home. More fathers must help with child care. 

    These two special days are celebrated in many different ways. On Mother's Day people wear carnations

which have two colors. A red one symbolizes (象征) a living mother. A white one shows that the mother is

dead. Many people attend religious services to honor parents. It is also a day when people whose parents are

dead visit the cemetery. On these two days families get together to have parties at home, as well as in

restaurants. These are days of fun and good feelings and memories.

    Another tradition is to give cards and gifts. Children make them in school. Many people make their own

presents. These are valued (珍爱) more than the ones bought in stores. It is not the value of the gift that is

important, but it is "the thought that counts". Greeting card stores, florists, candy makers, bakeries, telephone

companies, and other stores do a lot of business during these holidays.

1. Which of the following is NOT a reason for children to show love and respect for parents?

A. Parents bring children

B. Parents give love and care to children

C. Parents educate children to be good persons.

D. Parents pass away before children grow up

2. Which do you think is right about "carnation"?

A. It has only two kinds of colors.

B. It refers to the special clothes people wear on Mother's Day or Father's Day.

C. It's a kind of flower showing love and best wishes.

D. People can wear carnations only on the second Sunday in May.

3. What do you know from the passage?

A. Mother's Day and Father's Day are both in May.

B. Fewer women worked outside the home in the past

C. Not all the children respect their parents

D. Fathers are not as important as mothers at home

4. On Mother's Day and Father's Day, _____.

A. people usually have family parties

B. everyone goes to visit the cemetery

C. children always go to parents' home

D. hand-made cards are the most valuable gifts

题型:选择题

长期负债中,()主要包括应付补偿贸易引进设备款、应付融资租赁款等长期债务。

A.应付债券

B.长期借款

C.长期应付款

D.应付福利费

题型:选择题

使用数码照相机拍照记录,注意每次拍照的()保持一致

A.光线

B.大小

C.距离

D.角度

E.时间

F.人员

题型:选择题

在下列诸子散文中,想象丰富,结构灵活,文笔变化多端,多采用寓言形式,极富浪漫色彩的是()。

A、《论语》

B、《庄子》

C、《孟子》

D、《墨子》

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