某液体连续地从粗管流入细管,管径比为4:3,则流速比为()A.4:3 B.9:16

题型:单项选择题

问题:

某液体连续地从粗管流入细管,管径比为4:3,则流速比为()

A.4:3

B.9:16

C.16:9

D.3:5

考点:纯碱生产工纯碱生产工题库
题型:单项选择题
Adam Lee is a very popular man in Ottawa. He is not famous in sports or the arts,      people in the streets know about him, especially the       .
For those people, he is “Gloves Lee”. How did he get that       ? He looks like any other businessman, wearing a suit and carrying a briefcase (公文包). But he’s       . His briefcase always has some gloves.
In winter, Mr. Lee walks in the streets, looking around at people. He stops when he        someone with no gloves. He gives them a pair and then he moves on, looking for more people with cold       .
On winter days, Mr. Lee        gloves. During the rest of the year, he buys gloves. People who have heard about him        him gloves, and he has many in his apartment.
Mr. Lee began doing this 21 years ago. Now, many poor people in the city know him and        his behavior. But people who don’t know him are sometimes surprised by him. They don’t realize that he just wants to make them happy. A pair of gloves may be a       thing, but it can make a big difference in winter.
小题1:
A.orB.soC.but D.and
小题2:
A.old B.young C.rich D.poor
小题3:
A.job B.name C.chance D.message
小题4:
A.calm B.different C.crazy D.honest
小题5:
A.helps B.chooses C.greets D.sees
小题6:
A.hands B.feetC.faces D.ears
小题7:
A.searches for B.picks up C.gives away D.puts on
小题8:
A.call B.send C.lend D.show
小题9:
A.understand B.dislike C.study D.excuse
小题10:
A.bigB.goodC.smallD.useful
题型:单项选择题

下列有关法律规则、法律原则、法律条文、法律渊源,说法错误的是:( )

A.“转让注册商标的,转让人和受让人应当共同向商标局提出申请”,包含了法律规则的“假定条件”和“行为模式”两个要素

B.“人民法院审理民事案件,必须以事实为根据,以法律为准绳”,既是规范性条文,也是一项法律原则

C.表现为成文法形式的法的正式渊源,是决定法官审理待决案件的惟一依据

D.法律规则具有预测性,人们可以根据法律规则来预测自己或他人如何行为以及由此所要承受的法律上的后果

题型:单项选择题

Rh血型不合时新生儿换血采用下列哪种类型血:

A.Rh阳性,与新生儿同型

B.Rh阴性,A型血

C.Rh阴性,O型血

D.Rh阳性,O型血

E.Rh阴性,与新生儿同型

题型:单项选择题

在下列费用中,属于应收账款机会成本的是( )。

A.转换成本

B.坏账损失

C.投资于应收账款而丧失的再投资收益

D.收账费用

题型:单项选择题

试题二(20分) 某智能大厦的一套设备系统有A、B、C三个采购方案,其有关数据,见表2-l。现值系数见 表2-2。

 【问题】

拟采用加权评分法选择采购方案,对购置费和安装费、年度使用费、使用年限三个指标进行打分评价,打分规则为:购置费和安装费最低的方案得l0分,每增加 10万元扣0.1分;年度使用费最低的方案得l0分,每增加1万元扣0.1分;使用年限最长的方案得l0分,每减少1年扣0.5分;以上三指标的权重依次 为0.5、0.4和0.1。应选择哪种采购方案较合理(计算过程和结果直接填入答题纸上中)

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