某运输企业2005年运输量计划中列示的计划周转量1314万吨公里;平均运距60公里;

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问题:

某运输企业2005年运输量计划中列示的计划周转量1314万吨公里;平均运距60公里;车辆计划中列示的营运50车辆,额定吨位5吨。无挂车参加营运。企业根据运输市场需求和计划运输周转量,编制了四种车辆运用效率指标计划组合方案,如下表所示。

组合方案 车辆工作率 平均车日行程 里程利用率 吨位利用率
方案一 75% 320公里 55% 110%
方案二 80% 310公里 59% 98%
方案三 80% 300公里 60% 100%
方案四 83% 300公里 55% 105%
根据以上资料,回答下列问题:

上述四种组合方案中,最优组合方案为( )

A.方案一

B.方案二

C.方案三

D.方案四

考点:初级公路运输经济初级运输经济(公路)专业知识与实务
题型:单项选择题

在结构化方法的软件需求定义中,可采用分析工具来辅助完成。下列工具中,哪些是常用的工具   Ⅰ.数据流图  Ⅱ.结构图  Ⅲ.数据字典  Ⅳ.判定表

A.Ⅰ和Ⅲ

B.Ⅰ、Ⅱ和Ⅲ

C.Ⅰ、Ⅱ和Ⅳ

D.Ⅰ、Ⅲ和Ⅳ

题型:单项选择题

设f(x)为连续函数,则

等于( ).

A.f(-f(

B.f(-f(

C.f(

D.f(

题型:单项选择题
In some countries, people eat rice every day.   36   they eat it two or three times a day,for breakfast, lunch and supper. They can   37  it, fry (煎) it or   38   it into rice noodles. They usually eat it   39  meat, fish and vegetables.
Some people do not eat some kind of   40 . Muslins, for example, do not eat pork, and Hindus do not eat beef.
The Japanese eat a lot of fish. Japan is an island and its   41  go all over the Pacific looking for fish to   42 . The Japanese sometimes eat uncooked fish, and they also eat a lot of rice.
In   43  such as Britain, Australia and the United States, the most important food is   44  or potatoes. People there usually make their bread from wheat flour. They   45  potatoes in different ways. They can boil them,fry them and roast (烤) them.
In Africa, maize (玉米) is the most important food.   46  rice and wheat, maize is a kind of cereal (谷物). African people make the maize   47  flour. From this flour they make   48  kinds of bread and cakes. Many Africans are very   49  and they can’t afford to eat much   50  with their cereal.
Cereals are a very important kind of food   51  we also need plenty of vegetables and lots of fresh   52 .
Some people eat   53  fruit and vegetables. They do not eat meat or fish or   54  that comes from animals. They eat only food from   55 . Some people say that food from plants is better for us than meat.
小题1:
A.SometimesB.SometimeC.Some timeD.Some times
小题2:
A.drinkB.eatC.haveD.boil
小题3:
A.makeB.turnC.changeD.eat
小题4:
A.asB.likeC.withD.together
小题5:
A.applesB.fishC.meatD.vegetables
小题6:
A.trainsB.planesC.fishing boatsD.life boats
小题7:
A.buyB.weighC.holdD.catch
小题8:
A.the worldB.countriesC.the eastD.developing countries
小题9:
A.breadB.cakeC.flourD.vegetables
小题10:
A.takeB.eatC.makeD.cook
小题11:
A.LikeB.AsC.BeingD.With
小题12:
A.ofB.fromC.intoD.up to
小题13:
A.the sameB.differentC.everyD.each
小题14:
A.richB.poorC.strongD.weak
小题15:
A.meatB.maizeC.flourD.bread
小题16:
A.soB.asC.becauseD.but
小题17:
A.riceB.cakesC.fruitD.potatoes
小题18:
A.not onlyB.onlyC.besidesD.except
小题19:
A.somethingB.anythingC.porkD.beef
小题20:
A.plantsB.applesC.pigsD.fish
题型:单项选择题

设备露天布置的好处有哪些?哪些情况下的设备可以露天布置?

题型:单项选择题

不影响药物胃肠道吸收的因素是:

A.药物的晶型

B.药物的粒度

C.药物旋光度

D.药物的解离常数

E.药物的脂溶性

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