绿色化
学最理想的“原子经济”就是反应物的原子全部转化为期望的最终产物。以下反应最符合这一要求的是
| A．乙烯聚合为聚乙烯 | B．光照条件下甲烷与氯气反应制一氯甲烷 |
C． 铜和浓硝酸反应制硝酸铜 |
D．用铜作催化剂将乙醇氧化为乙醛 |
相关试题
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A． | other | B． | others | C． | one | D． | ones |
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 |
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