能引起矽肺的工种主要见于() A.水泥包装工 B.煤炭装卸工 C.铸件清砂工 D.水

题型:单项选择题 A1型题

问题:

能引起矽肺的工种主要见于()

A.水泥包装工

B.煤炭装卸工

C.铸件清砂工

D.水电焊工

E.滑石开采工

考点:广西公共卫生住院医师规范化培训职业卫生与职业医学职业卫生与职业医学题库
题型:单项选择题 A1型题

阅读下面短文,根据其内容完成后面各项任务

In the Charles E. Johnson Elementary School in New York, there is a special radio. It gives people warnings(警报)about bad weather.

One day, there came a sound from the radio. This sound brought the piece of news:a heavy storm was coming. William Tom, principal(校长)of the school, asked teachers to bring children indoors and put them in a safe place at once.

Minutes later, the storm came. However, because of the warning of the radio and the quick work of the principal, no one was hurt.

“The radio really did work very well.             (我们对它的工作感到很高兴),”William Tom said. “The parents were as well.”

The U.S. government hopes there will be more such success stories. It plans to give this kind of radios to all 97,000 public schools in the country.

Every year, more than 10,000 big thunderstorms, 2,500 floods, 1,000 tornadoes(龙卷风)and some hurricanes(飓风)take place in the U.S., so the warning radios are very useful. They not only give people warnings about bad weather, but also give warnings about other dangerous things.请根据短文内容,简要回答下列问题.

小题1:What does the special radio give people?

                                          

小题2:Why was no one hurt in the school in the storm?

                                          

小题3:请根据短文中所给汉语完成句子。

                                          

小题4:请把短文中划线的句子译成汉语。

                                          

小题5:请给短文拟一个恰当的英文标题。

                                          

题型:单项选择题 A1型题

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《建筑工程地质勘探与取样技术规程》中,为保证找平层的密实度和平整度,每遍抹灰的厚度不宜大于()。

A、5mm

B、10mm

C、12mm

D、15mm

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A.吸附法;

B.硫酸、白土法;

C.渗滤法;

D.硫酸再生法。

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