被除数是21，除数是3，商是（ ）。

So it is today. Schedule disaster, functional misfits, and system bugs all arise because the left hand doesn’t know what the right hand is doing. As work （）, the several teams slowly change the functions, sizes, and speeds of their own programs, and they explicitly or implicitly （） their assumptions about the inputs available and the uses to be made of the outputs. For example, the implementer of a program-overlaying function may run into problems and reduce speed relying on statistics that show how （） this function will arise in application programs. Meanwhile, back at the ranch, his neighbor may be designing a major part of the supervisor so that it critically depends upon the speed of this function. This change in speed itself becomes a major specification change, and it needs to be proclaimed abroad and weighed from a system point of view. How, then, shall teams （） with one another In as many ways as possible. Informally. Good telephone service and a clear definition of intergroup dependencies will encourage the hundreds of calls upon which common interpretation of written documents depends. Meetings. Regular project meetings, with one team after another giving technical riefings, are （）. Hundreds of minor misunderstandings get smoked out this way. Workbook. A formal project workbook must be started at the beginning.

As work （）, the several teams slowly change the functions, sizes, and speeds of their own programs

A．starts

B．proceeds

C．stops

D．speeds

在《医学源流》中作者没有肯定的医家有（）

A.王肯堂

B.薛己

C.张景岳

D.柯琴

E.喻昌

下列各项对肝癌诊断最有价值的是（）.

A.肝区痛

B.进行性肝肿大

C.肝质地硬

D.肝触痛

E.肝边缘钝

关于计算机记账规则下面说法正确的是（）

A、数据输入必须由有权人办理，非有权人不得输入任何数据。

B、数据输入必须按照事权划分的原则办理，做到数字准确，摘要齐全，处理及时。

C、记账时应签发回单后记账；现金收入，先收款后记账；现金付出，先记账后付款；转账业务，先记借后记贷；代收他行票据，收妥抵用。

D、柜员记账必须打印记账信息。

国有农场双层经营体制实行（）的有统有分、统分结合的管理体制。