给水泵暖泵系统的目的，是使泵体温度始终与除氧器水温相匹配。

计算机通过电话网拨号方式上网时，异步传输的字符同步，下列选项 (18) 的说法是正确的；采用数据位为8位的异步起止方式传输数据时，其效率最高为 (19) ，高级数据链路控制规程(HDLC)是 (20) 提出的标准；HDLC帧同步标志是 (21) ；HDLC协议为保证帧同步标志在线路上传输时的惟一性，对数据进行的处理是 (22) 字节。

A．10101011

B．01111111

C．01111110

D．10101010

______________ about wild plants that they decided to make a trip to Madagascar for further research.

A．So curious the couple were

B．So curious were the couple

C．How curious the couple were

D．The couple were such curious

Developing reliable software on time and within （） represents a difficult endeavor for many organizations. Usually business solutions have three main aspects: people, （） , and technology. The main reason for failing software projects has little to do with technology and tools, and much to do with lack of process （） . Experience has shown that introducing new technology and tools in an immature or undisciplined environment is likely to increase the chaos. CASE tools are not enough. “A fool with a tool is still a fool!” Structured method was the first wave of the software industry. This was the beginning of transforming software development from a “ （） industry” to mass production. Software process movement is the second wave in the software industry. The process maturity movement prepares the way for the third wave of the software industry: “software industrialization”.Software development will become like an assembly and manufacturing process. A critical enabling factor is a disciplined software engineering process with predictable quality, （） and functionality.

（） and functionality.

A．plan

B．schedule

C．effort

D．product

为调整菌群严重失调，应使用（）。

A.维生素

B.纤维素

C.抗生素

D.益生素

E.营养素

下列说法中，不属于数据模型所描述的内容的是______。

A．数据结构

B．数据操作

C．数据查询

D．数据约束