判断题
5. ‘Virus-like particle’ (VLP) vaccine is a real virus vaccine.
错误
单项选择题 圆轴扭转时横截面上的剪应力沿半径方向呈线性分布,指向与扭矩转向一致。 A、正确 B、错误
判断题 两个理想独立电流源可以并联在一起。正确错误
单项选择题 15. Smugglers removed much of the food and water on board to ____ more people_____. A、A. cram…with B、B. cram…in C、C. stuff…to D、D. stuff…with