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问题 选择题

下列相关化学与生活、生产的叙述错误的是(　　)

A．用作“钡餐”的物质主要成分是硫酸钡

B．采用催化设施,将汽车尾气中CO和NO转化为无害气体

C．常温下,可以用铁制容器来盛装冷的浓硫酸

D．SO2具有氧化性,可用于漂白纸浆

答案

答案：D

硫酸钡难溶于盐酸(胃酸),可用作钡餐,A正确;在催化剂作用下可以发生反应:CO+NOCO2+N2,B正确;常温下,浓硫酸可以使铁发生钝化,所以可以用铁制容器来盛装冷的浓硫酸,C正确;用SO2漂白纸浆,是因为SO2的漂白性而非氧化性,D错。

阅读理解

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单项选择题

张力性气胸的急救处理首先应该

A．气管内插管辅助呼吸

B．输血、输液治疗休克

C．立即排气解除胸膜腔的高压状态

D．剖胸探查

E．气管切开
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