酸有广泛的用途，下列关于硝酸的叙述中，正确的是（ ）
| A．溶有二氧化氮的浓硝酸可作火箭中的助燃剂 |
| B．现代工业中使用硝酸钠与浓硫酸反应制取硝酸 |
| C．稀硝酸与铜反应生成NO，浓硝酸与铜反应则生成NO2，说明稀硝酸的氧化性更强 |
| D．稀硝酸具有酸性，可与硫化亚铁反应生成硫化氢气体 |
相关试题
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |
The children loved their day trip, and they enjoyed the horse ride ______.
| A．most | B．more | C．less | D．little |
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
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