【多选题】指出下列分组哪些是按品质标志分组( )。
【简答题】n. [C] sb. whose job is to repair vehicles or machines 机修工;技工
【单选题】若某组沙样的级配中【图片】,则该组沙样粒径 。
【简答题】n. [C] sb. whose job is to make things from wood or repair things that are made of wood 木匠;木工
【判断题】全球500强企业绝大部分发展到一定程度和规模后,都会选择多元化投资战略,但匆忙的多元化只能是一步险棋。
【简答题】m____ n. [C] sb. whose job is to repair vehicles or machines 机修工;技工