某汽车制造企业每年需要采购相关的零部件,与库存相关的信息如下:年需求量为10000件

题型:单项选择题

问题:

某汽车制造企业每年需要采购相关的零部件,与库存相关的信息如下:年需求量为10000件,购买价格每件350元,保管费用是零部件单价的7%,订货费用每次200元,一次采购完成后,对该零部件进行相应的库存控制。

为保证生产而进行的正常库存是各个环节不发生断货情况的( )水平。

A.最低库存

B.最高库存

C.日常库存

D.安全库存

考点:中级工商管理经济师中级工商管理专业知识与实务
题型:单项选择题

关于位移和路程,下列说法中正确的是(  )

A.物体沿直线向某一方向运动,通过的路程就是位移

B.物体沿直线向某一方向运动,通过的路程等于位移的大小

C.物体通过一段路程,其位移可能为零

D.物体通过的路程可能不等,但位移可能相同

题型:单项选择题
在匀强磁场中有一个原来静止的碳14原子核,它放射出的粒子与反冲核的径迹是两个相内切的圆,如图所示.那么碳14的衰变方程为(  )

A.+

B.+

C.+

D.+

题型:单项选择题

The Best Rice Cookers

☆☆☆☆Tefal Automatic 2W3 Classic Rice Cooker

One of the largest rice cookers on the market, with a 2-litre capacity (容量)(up to 12 servings).It looks "rather utilitarian", but gives "the least sticky results" and its removable power cord means it can be taken outdoors or to the table.It comes with eight recipes and once cooking is completed it automatically switches to "keep-warm mode".Price; $29.99.Call 0800-616413 for stockists.

☆☆☆ Keiswood Rice Cooker and Steamer RC310

A "stylish looking machine with a heavy glass lid and a steam tray for steaming fish and vegetables.It cooks up to ten portions of rice(l.8-litre capacity), and produces "good results" although the rice tends to get sticky on the bottom layer.It keeps the rice warm once cooking is completed, but the power cord is not removable.Price:$34.99.Call 01705-392333 for stockists.

☆☆☆Zojurushi Rice Cooker / Warmer NDAQ – N10W

This cooker has a one – litre capacity (five portions of rice) and keeps rice warm for up to 12 hours after cooking. The lid has a clip – lock and is sealed so cooking is pressurized. It cooks rice “perfectly”, though “at a price”. Price: $ 109.90. Call 0181 – 9982100 for stockists.

☆☆☆Magimix – 2 – Tier Steamer

A double – layer steamer with two large stainless – steel steam baskets. Rice is cooked in a heat – proff dish which is inserted in the bottom tier (层). It is “perfectly done” in just 20 minutes, with “no stickiness or scorching (烧焦).” The rice can also be kept warm on half power. Price: $ 89.95. Call 04183 – 427411 for stockiest.

☆☆☆Lakeland Ltd Microwave Multi – Steamer (Raf 4241)

A four – portion steamer which takes just ten mantes in the microwave to cook four “fluffy” portions of rice. It is alos suitable for vegetables, noodles and pasta and is “great for smallest quantities”. Price: $ 5.95. Call 015394 – 88100 to order.

☆☆Hinari Steam Supreme

A double – layer steamer which comes with an additional rice bowl and lid. Its main drawbacks are “time and capacity”; the rice bowl can only hold two portions and this takes 55 minutes to cool. The instructions are also confusing. “Good as a general steamer, mediocre as a rice cooker”. Price: $ 19.99. Call Alba Ltd on 0181 – 7873111 for stockiest.

小题1:Which of the following is unlikely to be considered by a housewife who hates washing sticky cookers?

A.Tefal Automatic 2003 Classic Rice Cooker

B.Kenwood Rice Cooker and Steamer RC 310

C.magimix 2 – Tier Steamer

D.Lakeland Ltd Microwave Multi – Steamer (Ref 4241)小题2:     may not be so popular with customers as others because it is time – consuming, low in capacity and vague in instructions.

A.Zojurushi Rice Cooker / Warmer NDAQ – N10W

B.Lakeland Ltd Microwave Multi – Steamer (Ref4241)

C.Hinari Steam Supreme

D.Kenwood Rice Cooker and Steamer RC 310小题3:The phrase “at a price” describing Zojurushi Rice Cooker / Warmer NDAQ – N10W implies that its price is           .

A.low

B.high

C.above average

D.reasonable

题型:单项选择题

设f(x)在区间[0,+∞)上连续,且

,求证:微分方程

的一切解,当x→+∞时都趋于1.

题型:单项选择题

直流电器灭弧装置多采用()。

A.陶土灭弧罩

B.金属栅片灭弧罩

C.封闭式灭弧室

D.串联磁吹式灭弧装置

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