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【简答题】
如图,是农村建房用的塔吊,用此塔吊可将砖等重物方便地运送楼上。如果用质量为30kg独轮车装砖块,一次可吊运270kg的砖块30s匀速运动到三楼,每层楼高3m,它使用的“380V 3KW”电动机。设一切摩擦不计,吊钩质量不计。回答以下问题: (1)直流电动机的工作原理是 。 (2)电动机外轮上装有电磁闸,电磁闸上的电磁铁在电动机通电转动时同时通电产生磁性,使电磁闸闸鼓放开;电动机不通电不转动时电磁铁不通电失去磁性,闸鼓在强弹簧作用下张紧,闸鼓抱紧电动机外轮,使电动机立即停止转动,其作用是 。 (3)试求塔吊一次做的有用功、总功、有用功率及整个塔吊的机械效率,并说明机械效率较低的原因(只说一点即可)。
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举一反三
【简答题】C3. What do managers need to know about managing in a global organization? What training should be provided to managers in a global organization? Companies are increasingly hiring locals to run operat...
【多选题】清营汤中的佐药为银花、连翘、 [填空(1)] 、 [填空(2)] 、丹参。
A.
竹叶
B.
黄连
【简答题】Explain what questions managers need to ask first to begin the strategic management process.
【单选题】Managers need to take action to convince high-flyers of their value to the firm.
A.
Existing management research does not tell us much about how to find and develop high-flyers, those people who have the potential to reach the top of an organisation. As a result, organisations are left to formulate their own systems. A more effective overall policy for developing future leaders is needed, which is why the London Business School has launched the Tomorrow's Leaders Research Group (TLRG). The group contains representatives from 20 firms, and meets regularly to discuss the leadership development of the organisations' high-flyers.
B.
TLRG recognises just how significant line managers are in the process of leadership development. Unfortunately, with today's flat organisations, where managers have functional as well as managerial responsibilities, people development all too often falls victim to heavy workloads. One manager in the research group was unconvinced by the logic of sending his best people away on development courses, 'only to see them poached by another department or, worse still, another firm'. This fear of losing high-flyers runs deep in the organisations that make up the research group.
C.
TLRG argues that the task of management is not necessarily about employee retention, but about creating 'attraction centres'. 'We must help line managers to realise that if their companies are known as ones that develop their people, they will have a greater appeal to high-flyers,' said one advisor. Furthermore, selecting people for, say, a leadership development programme is a sign of commitment from management to an individual. Loyalty can then be more easily demanded in return.
D.
TLRG has concluded that a company's HR specialists need to take action and engage with line managers individually about their role in the development of high-flyers. Indeed, in order to benefit fully from training high-flyers as the senior managers of the future, firms must actually address the development of all managers who will be supporting the high-flyers. Without this, managers will not be in a position to give appropriate advice. And when eventually the high-flyers do move on, new ones will be needed to replace them. The next challenge will be to find a new generation of high-flyers.
【简答题】清营汤中银花和连翘的配伍意义是
【简答题】阅读材料,完成下列要求。 材料 人类古典文明在形成过程中,其所处的地理环境对生活于其中的某个人类共同体的经济生活具有直接的、决定性的影响,并通过对经济生活的影响,进而间接地影响到其社会政治及精神生活。中国黄河流域,平原土地丰饶,农业发达,实行封建政治,有巩固的国体,文明灿然;希腊多山、近海,海滨交通便利,能激发冒险进取之心和向往自由之精神。 ...... 中国先秦时期形成王权;古希腊的雅典...
【简答题】清营汤中配伍金银花、连翘、竹叶的意义何在?
【简答题】采样系统方框图如图7-15所示。 图中T=1s。试求闭环系统的脉冲传递函数 ,并计算系统在r(t)=2.1(t)时的稳态误差 。
【单选题】Which trend do most managers need to get used to in the coming years?
A.
Most workers will be hired as permanent employees at a lower pay scale than they were in the past.
B.
Many workers will be hired as consultants rather than as freelance employees.
C.
Most workers will be hired as permanent employees rather than on a freelance basis.
D.
Many workers will be hired on a freelance basis rather than as permanent employees.
【简答题】5 All managers need to understand the importance of motivation in the workplace. Required: (a) Explain the ‘content theory’ of motivation. (5 marks)
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【单选题】Managers need to take action to convince high-flyers of their value to the firm.
A.
Existing management research does not tell us much about how to find and develop high-flyers, those people who have the potential to reach the top of an organisation. As a result, organisations are left to formulate their own systems. A more effective overall policy for developing future leaders is needed, which is why the London Business School has launched the Tomorrow's Leaders Research Group (TLRG). The group contains representatives from 20 firms, and meets regularly to discuss the leadership development of the organisations' high-flyers.
B.
TLRG recognises just how significant line managers are in the process of leadership development. Unfortunately, with today's flat organisations, where managers have functional as well as managerial responsibilities, people development all too often falls victim to heavy workloads. One manager in the research group was unconvinced by the logic of sending his best people away on development courses, 'only to see them poached by another department or, worse still, another firm'. This fear of losing high-flyers runs deep in the organisations that make up the research group.
C.
TLRG argues that the task of management is not necessarily about employee retention, but about creating 'attraction centres'. 'We must help line managers to realise that if their companies are known as ones that develop their people, they will have a greater appeal to high-flyers,' said one advisor. Furthermore, selecting people for, say, a leadership development programme is a sign of commitment from management to an individual. Loyalty can then be more easily demanded in return.
D.
TLRG has concluded that a company's HR specialists need to take action and engage with line managers individually about their role in the development of high-flyers. Indeed, in order to benefit fully from training high-flyers as the senior managers of the future, firms must actually address the development of all managers who will be supporting the high-flyers. Without this, managers will not be in a position to give appropriate advice. And when eventually the high-flyers do move on, new ones will be needed to replace them. The next challenge will be to find a new generation of high-flyers.
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