在并车屏上装有()。A.整步表、整步指示灯、功率因数表 B.整步指示灯、功率因数表及

题型:单项选择题

问题:

在并车屏上装有()。

A.整步表、整步指示灯、功率因数表

B.整步指示灯、功率因数表及其转换开关

C.功率因数表、频率表及其转换开关

D.整步表、整步指示灯、频率表及其转换开关

考点:海船船员考试船舶电站船舶电站题库
题型:单项选择题

Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew.As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated in the new technology and are keeping pace with rapid changes in knowledge. Finally, urbanization creates age-segregated neighborhoods. Because the old live on fixed incomes, they must often live in inferior housing. All these factors — retirement, obsolete knowledge and skills, inferior standards of living — lower the status of the aged in society.A century ago, when one could expect to live only to 50 or so, the life span more or less coincided with the occupation and family cycle. But today the average life span allows for fifteen to twenty years of life after these cycles. It appears that our life span is outpacing our usefulness in society.

The author’s attitude toward the aged is________.

A.realistic

B.optimistic

C.pessimistic

D.sympathetic

题型:单项选择题

关于结肠和直肠术前准备,叙述错误的是().

A.手术前5~7日进低渣饮食

B.术前2日进全流食

C.术前3天用抗生素

D.术前1天服用泻药、灌肠

E.术晨灌肠

题型:单项选择题

强夯法不适用于如下哪种地基土?

A.松散砂土

B.杂填土

C.饱和软黏土

D.湿陷性黄土

题型:单项选择题

高炉精料的含义:(1)对入炉原料的精加工;(2)采用合理的炉料结构。

题型:单项选择题

方案属于计划类文种中的一种。

更多题库