用酒精燃烧法测含水率试验的主要试验步骤有:①用滴管将酒精注入放有试样的称量盒中,直至

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问题:

用酒精燃烧法测含水率试验的主要试验步骤有:①用滴管将酒精注入放有试样的称量盒中,直至盒中出现自由液面为止。为使酒精在试样中充分混合均匀,可将盒底在桌面上轻轻敲击。②取代表性试样(黏质土5~10g,砂类土20~30g)放入称量盒内,称温土质量。③将试样冷却数分钟,按第2、3步的方法重新燃烧两次。④点燃盒中酒精,燃至火焰熄灭。⑤待第三次火焰熄灭后,盖好盒盖,立即称干土质量,准确至0.1g其余同烘干法。正确的试验步骤是______。

A.②①④③⑤
B.⑤①③②④
C.③①⑤④②
D.③⑤④①②

考点:公路工程试验检测员考试材料材料
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小明在计算除法时,不小心把除数72写成了27,结果得到的商是23,余数是4,正确的商应该是多少?余数是多少?

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四.阅读理解(每题2分,共40分)

An old woman went suddenly blind. She promised a doctor a lot of money if he could make her see again. “If you fail”, she said , “ you will get nothing,” The doctor agreed with her.

The doctor soon discovered what was wrong with her, but he decided not to cure her right away. Instead, each time he visited, he secretly took some of her things. When he had taken everything that he wanted, he cured her blindness and sent her a large bill. Now when the old woman could see again she noticed that all her things had gone and she refused to pay the bill. So the doctor took her before a judge.

“What the doctor says is true.” she said to the judge. “But I say I’m not cured, because I still can’t see any of the things in my house.”

The old woman won her case and the doctor went away unhappily without getting his pay.

71. The doctor didn’t cure the old woman right away because __________.

A. He didn’t know how to cure her              B. He wanted to get a lot of money

C. He wanted to take the woman’s things       D The woman refused to pay him

72. The woman was _______ .

A. clever       B. greedy        C. cruel       D. dishonest

73. The doctor was ________.

A. honest       B. a cheat       C. a kind man      D. ready to help others

74. Which sentence is right according to the passage?

A. The judge didn’t believe the old woman    

B. The doctor cured the woman’s blindness in a short time.

C. The woman got back all her things taken by the doctor.

D. The doctor failed to get his pay.

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超主权储备货币的出现,能够有效克服“特里芬难题”。

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唐代诗人李绅的《悯农》中“谁知盘中餐”下一句是什么?

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水上交通事故的统计研究表明,相邻事故的间隔时间服从(),某一时间段内发生的事故数服从。

A、负指数分布,泊松分布

B、泊松分布,负指数分布

C、正态分布,泊松分布

D、正态分布,负指数分布

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