叙述羰基镍的产生条件?
参考答案:
当催化剂处于氧化或硫化态时,不会生成羰基镍,如其为还原态,就可能会生成羰基镍。
Next week, ____ British Parliament will vote on ____ ban for all cigarette advertising.
Ministers wish to cut smoking children under 16 years by a third by 2012. [ ]
A. /;a
B. the; a
C. a;/
D. a; the
营业时段值班管理人员需要()及()店面营运管理工作。