单项选择题

项目结构中的一个工作项的综合编码由( )个部分(段)组成。

A.3
B.4
C.5
D.6
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单项选择题

【案例分析题】

Washington Irving was America’s first man of letters to be known inter nationally.His works were received enthusiastically both in England and in the United States.He was,in fact,one of the most successful writers of his time in either country,delighting a large general public and at the same time winning the admiration of fellow writers like Scott in Britain and Poe and Hawthorne in the United States.The respect in which he was held was partly owing to the man himself,with his warm friendliness,his good sense,his urbanity,his spirits,his artistic integrity,his love of both the Old World and the New.Thackery described Irving as’a gentleman,who,though himself born in no very high sphere,was most finished,polished,witty;socially the equal of the most refined Europeans.’In England he was granted an honorary degree from Oxford--an unusual honor for a citizen of a young,uncultured nation--and he received the medal of the Royal Society of Literature;America made him ambassador to Spain.
Irving’s background provides little to explain his literary achievements.A gifted but deliberate child,he had little schooling.He studied law,but without zeal,and never did practice seriously.He was immune to his strict Presbyterian home environment,frequenting both social gatherings and the theatre.

Which of the following best describes the effect of Irving’s personal qualities on his literary success?()

A.His personal qualities were entirely responsible for his literary success.
B.His personal qualities were primarily responsible for his literary success.
C.His personal qualities, had some effect on his literary success.
D.His personal qualifies had no effect on his literary success.

单项选择题

【案例分析题】

The earliest vertical windmills were used in Persia more than 2,000years ago for the grinding of grain.Windmills were adopted for pumping water in North America by the middle of the nineteenth century.Their use declined drastically in the 1930’s when inexpensive electricity reached the rural areas.A renewed interest in the use of wind power to generate electricity followed the energy crisis of the 1970’s.A program of the United States Department of Energy encouraged the development of new machines,the construction of wind farms,and an evaluation of the economic effect of a large scale Use of wind power.
Public acceptance of wind energy conversion systems is an important consideration in planning for the widespread application of wind energy.Studies have shown that the environmental impact of such systems is relatively small compared with conventional electric power systems.Wind-powered systems do not require the flooding of large land areas or the alteration of the natural ecology,as dohydroelectric systems.Furthermore;they produce no waste products or thermal or chemical effluents,as fossil-fueled and nuclear fueled systems do.

Which of the following is NOT an advantage of wind energy?()

A.Wind energy does not require the flooding of large land areas.
B.Wind energy produces no waste products.
C.The availability of wind energy is not dependent on the weather.
D.Wind energy does not produce thermal or chemical effluents.

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