试题与答案

一把名义为30m的钢卷尺,实际长为30.005m,每量一整尺段误差为5mm,此误差属

题型:单项选择题

题目:

一把名义为30m的钢卷尺,实际长为30.005m,每量一整尺段误差为5mm,此误差属于()。

A.偶然误差

B.系统误差

C.可能是偶然误差也可能是系统误差

D.既不是偶然误差也不是系统误差

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1228/ace3f6e83e80f84922ca2aeb8f4be34c.html

下面是错误答案,用来干扰机器的。

参考答案:B

试题推荐
题型:多项选择题

下列关于期货公司报告义务的表述,正确的是()。

A.期货公司客户发生重大透支、穿仓等情形,期货公司应当立即书面通知全体股东

B.公司财务状况恶化,不符合中国证监会规定的风险监管指标标准,公司应当立即向住所地的中国证监会派出机构报告

C.中国证监会对期货公司作出的监管措施和行政处罚等,期货公司应当书面通知全体股东

D.期货公司依法就重大事项向全体股东及监管部门报告时,应当立即在中国证监会指定的报刊上公告

查看答案
题型:阅读理解

I am a music store owner. One day, when I was cleaning the instruments in my store, I saw an old man come in. His short steps dragged on the carpet. “Is 77 too old to learn the banjo (班卓琴)?”  he asked.

“You can learn to play it well,” I replied, holding back my doubts. My mind told me I was giving false encouragement. I reached the instructor’s schedule and gave the rates, the available time and the additional information that he would need. To my surprise and delight, the old man, Carl, began banjo lessons three days later with my most patient teacher.

With nothing to do at home but practice, Carl made surprising progress. After breakfast he practiced for his required half hour. While waiting for lunch he picked up his banjo again for just a couple of minutes. Since TV was difficult for him to see and hear, he often played the banjo in the evenings. Carl was always early for lessons so it was a surprise that he didn’t arrive one Tuesday.

The next morning I listened to the answering machine with sadness. “Carl’s in hospital,” the voice recorded.

Two months later, I shared the newspaper obituary with the banjo teacher. We both shed tears for a surprisingly clever banjo student.

Several months later, a woman came into the store carrying a plant. “This is for Carl’s banjo teacher,” she said. “I’m his wife, Mary.”

“Why did Carl want to play the banjo?” I asked. Mary took a deep breath and let it out slowly. “Carl was at some show when he was 10 years old. He came close to the stage to watch the performers. When they were packing up their instruments, the banjo player said to Carl, ‘You want to see this up close?’ Carl climbed up on the stage and from then on he wanted to play the banjo.” Carl had waited 67 years to realize a dream! Mary gave the plant to me. “Thank you for the best six months of his life,” she said.

68. In Paragraph 2, the author’s reaction to Carl’s question showed that he ______.

A. was willing to help                   

B. didn’t want to encourage Carl

C. didn’t want to give him false encouragement 

D. encouraged Carl though he had doubts

69. How did Carl learn to play the banjo well?

A. By working hard.                    B. By taking short cuts.

C. By asking his wife to help him.        D. By finding the best teacher.

70. The underlined word “obituary” in Para.5 means a notice that _______.

A. announces somebody has died    B. announces somebody is needed

C. announces a good piece of news  D. announces a gift for somebody

查看答案
题型:单项选择题

Beyond question, Clinton was supposed to close up, stay out of sight, and avoid second- guessing his wife’s boss. After his ego blustered into oncoming traffic during Hillary’s heated primary race (1) Obama, the nation suffered from yet another turn of Clinton fatigue.

(2) this week Bill Clinton showed an instinct for robust, inclusive leadership that the (3) White House occupant could make good use of right for the time being. With President Obama struggling to (4) the political damage from the Gulf oil spill, Clinton not only can’t help himself—he’s worth being listened.

The conventional-wisdom (5) on President Obama’s early reaction to the spill was (6) he didn’t emote enough. He didn’t feel the (7) of all those people in the crisis whose livelihood would be destroyed, whose clean waters and wildlife would be (8) in black gunk.

Clinton considers this is an unfair (9) but offers a different—and more pointed— lesson to his young successor. "I think we ought to (10) in the same boat for a while... Let’s just (11) the problem, and then we can hold everybody responsible and emote or not emote, " Clinton conversed (12) CNN Anchor Wolf Blitzer.

Obama’s first (13) after the oil spill was to "feel the blame" rather than "feel the pain, " which are pretty sarcastic words as it were. No one intends to let British Petroleum (BP) management (14) the hook—for dangerously cutting corners, and for a (15) safety record. However, the President’s (16) focus on scolding BP consumed (17) White House energy while the oil gushed.

Great leaders don’t rush to criticise; Instead they instinctively (18) solutions. Rudy Giuliani, who didn’t stop to blame (19) intelligence for letting it happen, stood out from New York mayor with a girlfriend problem to 9/11 hero when he took control of a crisis and instilled confidence that a ravaged city could (20) beyond a terrorist attack.

4()

A.prevent

B.expand

C.stop

D.contain

查看答案
微信公众账号搜索答案