互补色就是两种颜色混合成白色,则两色互为补色。
各类停工过程必须对系统进行热氢带油避免催化剂() ["发生还原","活性金属聚集","处于超低空速","破碎"]
What specific aspects does communicative competence include?
William won the Battle of Hastings.Later,on(),he was crowned king of England. ["Easter Day","St.Andrew's Day","Christmas Day","Boxing Day"]
人民警察依法使用武器的,应当将使用武器的情况如实向所属机关口头报告。()
按包装形式来分,纸张分为()和()。