栈和队列的共同特点是A.都是先进先出 B.都是先进后出 C.只允许在端点处插入和删除

题型:单项选择题

问题:

栈和队列的共同特点是

A.都是先进先出

B.都是先进后出

C.只允许在端点处插入和删除元素

D.没有共同点

考点:计算机等级考试C语言二级C语言笔试
题型:单项选择题

阅读理解,判断正(T)误(F)。

     One afternoon Bob and Jane were walking along a quiet street when they heard a big noise from the

street corner. They ran there and found that a small car had knocked into the side of a truck. Both the

car driver and the truck driver were hurt.

   "Bob," said Jane, "run back down the road to M r s Day's house. Ask her to call the police and the

ambulance(救护车) . Hurry. I'll stay here. "

    Bob went off as fast as he could. There was nothing Jane could do but wait. She knew that when

people were hurt in an accident, they shouldn't be moved.

    It wasn't long before the police car and the ambulance arrived. The policemen got the car door open

and moved the man out. Then they got the truck driver out. Luckily, the men weren't badly hurt, but they

were both taken to hospital. The policemen thanked Bob and Jane. "You were very good to act so

quickly when you saw the accident. Thank you for your help. "

( )l. The accident happened in a quiet street one afternoon.      

( )2. Bob,Jane,Mrs Day and the policemen heard the big noise.    

( )3. Both of the drivers were hurt in the accident.              

( )4. Jane asked Bob to call the police.                          

( )5. Jane had got the drivers out before the policemen arrived.  

题型:单项选择题

大于3.6而小于3.7的小数有无数个。[ ]

题型:单项选择题

2007年我国15个大中城市城镇居民家庭基本情况


地区
平均每户家庭人口(人)平均每户就业人(人)平均每一就业者负担人数(人)平均每人实际 月收入(元)人均可支配 月收入(元)人均消费月
支出(元)
全国合计2.91.51.91425.41287.4988.9
北京2.91.61.81865.11633.21187.9
石家庄2.81.421061.31010722.9
大连2.91.61.81269.81133.1946.5
上海31.61.918841686.11505.3
南京2.81.421536.41394920.6
杭州2.81.51.916951464.91264.2
厦门2.91.51.91631.71394.3998.7
青岛2.81.61.81495.61378.51020.7
郑州2.91.42.11012.2954.2750.3
长沙2.81.42.11256.91148.9986.8
深圳3.21.71.92748.82496.51859.4
重庆31.61.91388.21294.91259.8
西安2.91.42.1916.8833.6716.3
西宁31.32.313661302.5578.3
乌鲁木齐2.81.71.71049954.3642.4

从表格数据可以看出( )。

A.人均月收入越高,人均消费支出也就越高

B.就业者负担人数越多,则人均月收入越高

C.人均消费支出越高的家庭人口越少

D.人均可支配收入肯定大于人均消费支出,但一定小于人均实际月收入

题型:单项选择题

下列关于日本的叙述正确的是       [ ]

A.国土面积狭小人口稠密              

B.森林覆盖率低需大量进口木材      

C.水能资源和矿产资源丰富              

D.农作物单位面积产量低

题型:单项选择题

中央空调器中的多层曲折板是用来()。

A.降低空气噪声

B.降尘

C.挡除凝水

D.防止加湿过量

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