圆锯机由于使用广泛,因此类型较多。按锯解方向的不同可分为纵锯圆锯机、横截圆锯机和()

题型:单项选择题

问题:

圆锯机由于使用广泛,因此类型较多。按锯解方向的不同可分为纵锯圆锯机、横截圆锯机和()

A.原木圆锯机

B.再剖圆锯机

C.万能圆锯机

D.裁边圆锯机

考点:中级木工中级木工题库
题型:单项选择题

Bruce and his other two friends, Bruno and Dick lived in the same city in England. They were free in their summer holiday. So they came to a village by a large lake. They liked fishing very much. Then the next day after they got there, they got to a boat and went fishing in the lake. They boated farther and farther. They came to an out-of-way place. They were very happy because there were a lot of fish. When it was time for them to go home, Bruce said to his friends: “We’d better make a mark(标记) here so that we will easily find the place tomorrow.”

“You’re right.” Bruno said happily .“Let me do that.”

“How foolish,” said Bruce. “If it rains tonight, the rain water will wash the line(线) off, and how can we find the mark tomorrow. You must cut a line with your knife.”

Dick came up to them and said angrily. “ Neither(两者都不) of you is clever. How can we find the place if we have another boat tomorrow? We should not go back tonight.”

小题1:The three boys _______.

A.were all too young to go to school .

B. came from the city

C.were from the workers families

D. liked eating fish very much小题2:The boys wanted to go to the place again tomorrow because ______

A. it was a good place

B. there were a lot of fish

C. there was a mark on the side of the boat

D. they were good at fishing小题3:They should make a mark ______

A.thicker and color it red

B.on the fish

C.in the lake

D.on every boat

题型:单项选择题

如图所示,张同学在进行酸碱中和反应的实验时,向烧杯中的氢氧化钠溶液滴加稀硫酸一会儿后,发现忘记了滴加指示剂,因而无法确定硫酸与氢氧化钠是否恰好完全反应。为了证明这两种物质是否恰好完全反应,张同学从烧杯中取出少量反应后的溶液于一支试管中,并向试管中滴加几滴无色酚酞试液,振荡,观察到酚酞试液不变色。于是张同学得出“两种物质已恰好完全中和”的结论。

(1)你认为张同学得出的结论是否正确             ,理由是                

(2)请你设计另一个实验,探究上述烧杯中的溶液是否恰好完全中和,填写下表:

实验方法可能观察到的现象结论
   
(3)张同学利用酸碱中和反应的原理来处理某工厂废水中所含有的硫酸。经测定,该工厂废水中硫酸的质量分数为15%,若工厂每天用含氢氧化钙75%的熟石灰处理150t这种废水(假设废水中其他物质不与氢氧化钙反应),需要熟石灰多少吨? (精确到0.01)

题型:单项选择题

ABC会计师事务所在2009年度承接了各种业务。在参照《鉴证业务基本准则》的相关内容执行业务时,遇到了下列情况,请代为作出正确的专业判断。

下列各项ABC会计师事务所承接的业务中,不属于合理保证业务的有( )。

A.审阅财务报表,出具审阅报告

B.验证企业资本,出具验资报告

C.审计简要财务报表,出具审计报告

D.执行商定程序,出具报告

题型:单项选择题

正常人防止食管胃反流的机制是()

A.食管胃连接处的膈食管韧带,胃膈韧带起固定作用

B.食管为连接成锐角

C.食管胃连接处位于膈下2~3cm水平

D.膈肌脚的剪刀力作用

E.食管下段及贲门括约肌

题型:单项选择题

轨检车对线路局部不平顺(峰值管理)检查,偏差等级一般分四级,其中Ⅲ级为临时补修标准,每处扣()。

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