碳水化物分为（）、双糖、（）、（）四类。

参加一次聚会的每两人都握了一次手，所有人共握手10次，有_ ▲ 人参加聚会。

某企业2013年8月31日银行存款日记账余额240000元，银行对账单余额258000元。经逐笔核对，发现有几笔未达账项：

①企业偿还甲公司货款30000元已登记入账，但银行尚未登记入账。

②企业收到销售商品款34000元已登记入账，但银行尚未登记入账。

③银行已划转电费3000元登记入账，但企业尚未收到付款通知单、未登记入账。

④银行已收到外地汇入货款25000元登记入账，但企业尚未收到收款通知单、未登记入账。

表中A的金额为（）元。

A.34000

B.25000

C.30000

D.3000

In the 1970’s there was an oversupply of college graduates. The oversupply caused the average annual income of college graduates to fall to a level only 18 percent greater than that of workers with only high school diplomas. By the late 1980’s the average annual income of college graduates was 43 percent higher than that of workers with only high school diplomas, even though between the 1970’s and the late 1980’s the supply of college graduates did not decrease. Which of the following, if true in the [ate 1980’s, best reconciles the apparent discrepancy described above ？（）

A．The economy slowed, thus creating a decreased demand for college graduates.

B．The quality of high school education improved.

C．Compared to the 1970’s, a greater number of high schools offered vocational guidance programs for their students.

D．The proportion of the population with at least a collegelevel education increased.

E．There was for the first time in 20 years an oversupply of job seekers with only high school diplomas.

甲开发商开发建设一住宅小区，已取得国有土地使用证，正在施工，尚未封顶。

(1)甲开发商拟以该在建工程抵押，申请贷款，下列表述正确的是( )。

A．甲开发商可以向银行申请企业流动资金贷款

B．甲开发商不能以该在建工程为其他企业向银行申请贷款提供抵押物担保

C．该在建工程只有取得销售许可证后方可用于抵押贷款

D．该在建工程只有取得预售许可证后方可用于抵押贷款

在智能网中业务交换点（SSP）具有（）功能。

A.业务交换和数据库管理

B.呼叫处理和业务交换

C.呼叫处理和用户管理

D.呼叫处理和信令转接