YD—300导热油型号中的300是指（）。A.最高使用温度为300℃ B.燃点为30

热水供应系统按热水管网循环方式可分为( )。

A．无循环热水供应系统

B．半循环热水供应系统

C．全日循环热水供应系统

D．定时循环热水供应系统

The following questions present a sentence, part of which or all of which is underlined. Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.

Seeking to decrease the incidence of tooth decay, the American Dental Association is to spend $45 million over the next seven years promoting good dental hygiene.（）

A. the American Dental Association is to spend $45 million over the next seven years promoting good dental hygiene

B. the American Dental Association will spend $45 million over the next seven years to promote good dental hygiene

C. over the next seven years the American Dental Association is to spend $45 million promoting good dental hygiene

D. good dental hygiene will be promoted by the American Dental Association, which is spending $45 million over the next seven years

E. $45 million will be spent by the American Dental Association over the next seven years on the promotion of good dental hygiene

命令源最多的组织结构形式是( )。

A．直线式
B．职能式
C．矩阵式
D．直线职能式

建设项目管理信息系统的成功实施，不仅应具备一套先进适用的软件和性能可靠的计算机硬件平台，更为重要的是应建立一整套与先进的计算机工作手段相适应的、科学合理的( )。

A．工程建设项目信息处理体系

B．工程建设项目软件开发体系

C．工程建设项目组织与管理体系

D．工程建设项目组织规划体系

下列关于国家助学贷款催收的表述错误的是( )。

A．各经办银行应建立详细的还贷监测系统
B．各经办银行要加强日常还贷催收工作，做好催收记录，确认借款人已收到催收信息
C．各经办银行应将已到还款期的借款学生还款情况通知家长，家长对未还清的贷款负有连带保证责任
D．各经办银行应按季将已到还款期的借款学生还款情况反馈给学校，学校负责协助经办银行联系拖欠还款的借款学生及时还款