高性能水乳型三元乙丙橡胶防水涂料,具有橡胶状的高弹性、无机材料的耐老化性,使用寿命长

题型:判断题

问题:

高性能水乳型三元乙丙橡胶防水涂料,具有橡胶状的高弹性、无机材料的耐老化性,使用寿命长,高低温性能好,成本低,冷施工,无毒。( )

考点:防水工中级防水工中级
题型:判断题

一个梯形的上底是6厘米,比下底少2厘米,高是4厘米,它的面积是______平方厘米.

题型:判断题

事故应急救援体系

题型:判断题

磁流体发电是一项新兴技术,它可以把物体的内能直接转化为电能,如图所示,平行金属板A、B之间相距为d,板间的磁场按匀强磁场处理,磁感应强度为B,等离子体以速度v沿垂直于B的方向射入磁场,金属板A、B是边长为a的正方形,等离子体的电阻率为ρ,外接电阻R。求:

(1)发电机的电动势;

(2)电阻R上的电流;

(3)要使等离子体能进入磁场所需的外力.

题型:判断题

One day a mime(哑剧演员)is visiting the zoo and attempts to earn some money as a street performer. As soon as he starts to draw a crowd,a zookeeper drags him into his office.The zookeeper explains that the zoo's most popular attraction,a gorilla(大猩猩),has died suddenly and the keeper fears that attendance(出席人数) at the zoo will fall off.He offers the mime a job to dress up as the gorilla. The mime accepts.

The next morning the mime puts on the gorilla suit and enters the cage before the crowd comes.He soon discovers he can sleep all he wants,play and make fun of people and he draws bigger crowds than he ever did as a mime—the job he likes but loses.

However, with days going by,he begins to notice that the people are paying more attention to the lion in the cage next to his.Not wanting to lose the attention of his audience, he climbs to the top of his cage,crawls across a partition(隔墙),and dangles(悬挂)from the top to the lion’s cage. The lion gets angry at this. The scene is a fuel to the crowd.

At the end of the day he is given a raise for being such a good attraction—Well,this continues for some time.The crowds grow larger,and the mime’s pay keeps going up.

  Then one day when he is dangling over the lion he slips and falls.The mime is terrified. He starts screaming,  “Help me!”,but the lion is quick.The mime soon finds himself flat on his back looking up at the angry lion and the lion says, “Shut

up you fool! Do you want to get us both fired?”

小题1:The mime accepts the zookeeper’s offer because______________·

A.he has been out of work

B.he doesn’t like being a mime

C.he likes performing at the zoo

D.he is offered a higher pay there小题2:How does the mime find the job dressing up as the gorilla?

A.Hard and tiring.

B.Dangerous.

C.Easy and funny.

D.Boring.小题3:The mime’s first contact with the lion is to_________·

A.find pleasure for himself

B.get the lion’s attention

C.get his pay raised

D.win back his audience小题4:The underlined words “a fuel” in Paragraph 3 can be replaced by __________.

A. frightening    B common   C.exciting   D. familiar

题型:判断题

某人计划5年后从银行提取1万元,如果银行利率为10%,则此人现在应存入银行( )元钱。

A.( 7643

B.( 5674

C.( 6124

D.( 6209

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