科研诚信涉及哪些方面？科研不当行为（） A.处理数据、发表与署名、师生关系、合作研究

某含氧有机物X，其相对分子质量为46，其中碳的质量分数为52.2%，氢的质量分数为13.0%，其余为氧。

（1）X的分子式是________。

（2）X能与金属钠反应放出氢气，则X结构中含有的官能团的名称为________。

（3）X与空气中的氧气在催化剂作用下反应生成了Y，该反应的化学方程式是______________________，反应类型为________。

（4）X与高锰酸钾酸性溶液反应可生成Z，在加热和浓硫酸作用下，X与Z反应可生成一种有香味的物质W，若184 g X和120 g Z反应生成132 g W，该反应的化学方程式为____________________________，其中X的转化率为________。

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

 小题1:  The first, and perhaps the most important, is whether to bury the body or cremate(火化) it.

Cremation is the act of burning the body until only the ashes are left. The ashes are placed in a container called an urn(骨灰盒). The urn is often put on display during the memorial service.   小题2:  Or they may bury them in the earth, place them in a tomb or scatter them in a special place.

It is said that cremations were used in almost 35% of funerals in 2009.   小题3:  And the cremation rate is expected to increase to almost 59% by 2025.

While cremation has grown in popularity, most families in the United States still choose to bury their loved ones.

After death, the person’s body is usually embalmed (进行防腐处理) to preserve it until the funeral is held. A traditional full service funeral usually includes a public viewing. This is called a wake. The body is placed in a special burial box called a coffin.   小题4:  The service may include music and comments about the loved one by family members and friends. A religious leader may also talk about the person and offer spiritual comfort to the family. After the service, family members and friends go to the gravesite where the body is buried or placed in a tomb.

 小题5:  A traditional full service funeral averages about 6,000 dollars. Flowers, funeral cars and special burial requests can increase the cost to more than 10,000 dollars. Cremations usually cost thousands of dollars less.

A．Then a memorial service is held.

B．This was an 11% increase from 1999.

C．American funerals can be quite costly.

D．American families are in deep sorrow when a loved one dies.E.After the ceremony, the family may keep the ashes in their home.

F.American families have several decisions to make when a loved one dies.

G.More families choose cremations due to environmental protection, though they are more expensive.

饮酒后驾驶营运机动车的，处十五日拘留，并处多少罚款？

A．2000元

B．5000元

C．10000元

D．20000元

以下有关设备内作业的说法错误的是（）。

A.进入设备前，必须将待检修设备与其他设备进行安全隔离，并置换、清洗干净

B.在进入设备前30min必须取样分析，严格控制可燃气体、有毒气体浓度及氧含量在安全指标范围内，分析合格后才允许进入设备内作业。如在设备内作业时间长，也不再需要分析了

C.设备内作业前要切断设备的电动和照明电源，并挂上“有人检修、禁止合闸”的牌子

D.设备内作业，必须设专人进行监护，并与设备内人员保持有效的联系

关于支气管扩张，下列正确的是（）

A.咯血量与病情严重程度、病变范围完全一致

B.在诊断中高分辨CT基本取代支气管造影

C.引起感染的常见病原体为肺炎克雷伯杆菌

D.慢性咳嗽，大量脓痰与体位改变无关

E.病变重时肺部常可闻及位置不固定的湿啰音