(9分)一台直流电动机,额定电压为100V,线圈电阻为1Ω,正常工作时,通过它的

题型:计算题

问题:

(9分)一台直流电动机,额定电压为100V,线圈电阻为1Ω,正常工作时,通过它的电流为5A若不计其转动过程中的机械能损耗,

求:(1)电动机消耗的总功率

(2)电动机因发热损失的功率

(3)电动机输出的功率

考点:焦耳定律,电热电功
题型:计算题

人造地球卫星从太空观测地球,并迅速、大量地收集有关地球的信息,主要是利用了宇宙空间的:

A.浩瀚辽阔的特点
B.真高空
C.强烈辐射的特点
D.失重

题型:计算题

记账凭证是登记总账的依据,原始凭证是登记明细账的原始依据。()

题型:计算题

最初的货币所采取的形态是( )。

A.金币、银币

B.牲畜、皮革、烟草

C.纸币

D.银行券

题型:计算题

Helena, Nikita, Rosa and Yuri are four partners working in an unlimited partnership that provides training courses. heir partnership agreement states that each partner may act on behalf of the partnership in respect of deals with hird parties, but requires any transaction valued in excess of 500.000 roubles to be sanctioned by all partners. The greement further specifi es that any partner’s resignation will be subject to a notice period of three months, thereby nabling the business to fulfi l outstanding course bookings.Without consulting the other partners, Rosa withdrew 700.000 roubles from the partnership bank account in order o purchase a training software package from OOO Train, a regular supplier to the partnership. Rosa also admitted to sing the partnership premises and teaching resources on a private basis in order to increase her personal income. She efused to provide details but offered to make a payment of 100.000 roubles in respect of this privately commissioned usiness.In a subsequent argument between the partners, Yuri walked out of the business, stating that he would no longer be ble to work with the other partners, refusing to carry out any further commitments with immediate effect.Required:

(b) Explain whether OOO Train has an obligation to accept a return of the training software package and refund he partnership with the price paid. (3 marks)

题型:计算题

善敛肺气的药物是

A.浮小麦
B.麻黄根
C.五味子
D.牡蛎
E.龙骨

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