建设工程施工公开招标的程序中，发布招标公告后，应进行的工作是( )。A．资格预审

患者男，42岁。因"大量饮酒后出现上腹痛，伴恶心、呕吐10小时"诊断为急性重症胰腺炎收入消化科。入院1天后出现进行性加重的呼吸困难转入外科重症监护室。患者表现为焦虑、气促、口唇发绀。储氧面罩吸氧，氧流量10L/min。体格检查：T38℃，P131次／分，BP138/69mmHg。动脉血气分析提示：pH7.35，PaO₂60mmHg，PaCO₂35mmHg。胸部X线片心影无扩大，呈双肺斑片状改变。肺部听诊双肺呼吸音清。

导致患者出现呼吸困难的肺部病生理改变包括（）。

A.肺毛细血管内皮细胞和肺泡上皮细胞受损，引起肺间质和肺泡水肿

B.肺泡内纤维蛋白渗出及细胞浸润

C.大气道梗阻

D.肺表面活性物质减少，导致小气道闭陷、肺泡萎陷不张，肺顺应性降低

E.肺泡细胞及巨噬细胞内可见病毒包涵体

F.肺通气/血流比例失调、肺内动静脉分流增加

取一定量的二氧化锰和氯酸钾（2KClO₃2KCl+3O₂↑）混合加热制取氧气。反应结束后，二氧化锰在固体混合物中的质量分数比反应前[ ]

A．变小

B．变大

C．不变

D．无法确定

根据所给提示，完成句型转换。

1. There are some new students in our school this term. (改为否定句)

     There _______ _______ new students in our school this term.

2. The students don't have much time to play with their friends. (改为反义疑问句)

    The students don't have much time to play with their friends, ________ ________?

3. Maria and Jane have waited at the airport for two hours. (对画线部分提问)

    ________ _________ have Maria and Jane waited at the airport?

4. The questions are very easy.The children can understand them. (合并为一句)

    The questions are _________ ________ for the children to understand.

5. (课改实验区考生做) ①Jim left Chongqing 3 days ago because of his new work. (改为同义句)

     Jim has ________ ________ from Chongqing for 3 days because of his new work.

    (非课改实验区考生做)

    ② The film began about 20 minutes ago.You are late. (改为同义句)

         The film has ________ ________ for about 20 minutes. You are late.

下列建筑安装工程费用中，属于施工机械使用费的有( )。

A．夜间施工费

B．经常修理费

C．燃料动力费

D．大型机械设备进出场及安拆费

E．安拆及场外运输费

6502型电气集中控制台，列车自动通过按钮为（）。

A.二位式

B.二位自复式

C.二位非自复式

D.二位非自复式带铅封