车底涂料的涂装通常采用()法。
参考答案:高压无气喷涂
My brother has studied in ______ Qinghua University for two years. It’s ______ famous university in the world. [ ]
A. / , the
B. the, a
C. the, /
D. / , a
结构化方法将软件开发分为三个时期,这三个时期是计划期、开发期和______。