造成球面工作表面粗糙度达不到要求的原因之一是()A、铣削量过大 B、对刀不准 C、工

题型:单项选择题

问题:

造成球面工作表面粗糙度达不到要求的原因之一是()

A、铣削量过大

B、对刀不准

C、工件与夹具不同轴

D、工艺基准选择不当

考点:数控机床操作工考试数控机床操作工考试题库
题型:单项选择题

Like most English children, I learned foreign languages at school. When I made my first visit to the United States, I was sure I could have a nice and easy holiday without any language problem. But how wrong I was!

At the American airport, I was looking for a public telephone to tell my friend Danny that I had arrived. An American asked if he could help me. "Yes," I said, '1 want to give my friend a ring."

"Well, that's nice. Are you getting married?" he asked. "No," I replied, "I just want to tell him I have arrived." "Oh," he said, "there is a phone downstairs on the first floor." "But we're on the first floor now," I said.

"Well, I don't know what you are talking about Maybe you aren't feeling too well after your journey," he said. "Just go and wash up, and you will feel a lot better." And he went off, leaving me wondering where on earth I was: At home we wash up after a meal to get the cups and plates clean. How can I wash up at an airport?

At last we did meet. Danny explained the misunderstanding: Americans say "to give someone a call", but we English say "to give somebody a ring". When we say "to wash your hands", they say "to wash up". And Englishmen start numbering from the ground floor so the first floor is the second for Americans.

小题1:The writer went to America by  ______.

A.plane

B.ship

C.bus

D.train小题2:The writer went to America for______   .

A.education

B.business

C.holiday

D.friendship小题3:The American thought "a ring" should be a________  .

A.phone call

B.present

C.person

D.letter小题4:Englishmen usually wash up________ .

A.after dinner

B.after a journey

C.when they are tired

D.before they telephone someone小题5:The third floor in England is the ______floor in America.

A.first

B.second

C.third

D.Fourth

题型:单项选择题

无条件回售是一种无特别原因而进行的回售,通常是固定回售时间,一般在可转换公司债券偿还期的后( )或一半进行。

A.3/4

B.1/3

C.1/4

D.2/3

题型:单项选择题

成本计划中,加强费用管理,节约施工管理费的途径包括()等。

A.精简管理机构

B.压缩生产和辅助人员

C.制定费用定额指标

D.提高机械利用率

E.减少材料二次搬运

题型:单项选择题

非麻醉家兔实验采血5ml以上应首选下列哪个部位()

A.耳缘静脉

B.颈动脉

C.耳正中动脉

D.股动脉

E.双侧前肢静脉

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我过海军是由哪些兵种组成的?

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