两个方案各年净现金流量差额的现值之和等于零时的折现率是( )。A．净现值率 B．全

照明每一回路配线容量不得大于（）KW。

A.2

B.1

C.0.5

Management information systems form a bedrock ofIT use in the public sector. They are therefore found in all sections ofthe public sector and in all countries..Of course， different people use the term "management information system" differently: The term should therefore not form the basis for arguments about  （） an MIS is and is not. So long as one and those with whom one works understand and agree on a definition， that is good enough.Similarly， when dealing with written material， one needs to be able to（）and communicate， not get locked into doctrinal debate，

Many public service providers have developed management information systems to morutor and control the services that they provide. Both the US （） UK Social Security agencies have developed MIS to report on the welfare payments and services that they provide . The British public healthcare system has also been a major investor in MIS as it 1ries to control healthcare costs and simultaneously improve delivery standards .

Individual schools can also（）use ofMIS. Hobmoor Junior and Infant School， a public school in Birmingham， UK， introduced a computerised attendance system to produce MIS reports that monitor pupil attendance. This improved the Principal’s ability to understand and control absence patterns， resulting in a 2.5 per cent （） in attendance rates.

The term should therefore not form the basis for arguments about （） an MIS is and is not

A．what

B．that

C．which

D．this

《安全生产法》关于从业人员的安全生产义务主要有哪四项？

感染灶近侧肢体出现“红线”是由于发生了

A．网状淋巴管炎
B．浅部静脉炎
C．浅部淋巴管炎
D．脉管炎
E．荨麻疹

植物生长必需元素与肥料三要素