简述毕业生资格审查未获得通过时必须提供的证明材料。
用电负荷包括:1、发电负荷;2、供电负荷;3、损耗负荷
A. 正确
B. 错误
Carbon dioxide as a fire fighting agent has which advantage over other agents?().
A. It causes minimal damage
B. It is safe for personnel
C. It is cheaper
D. It is most effective on a per unit basi
一般在重卡中,能保证中,后桥车轮垂直载荷相等的悬架,称为()。