【单选题】Many experts think the implications of the new legislation will need to be .
【单选题】We _______ at the house as we _______ of buying it.
D.
were looking; were thinking
【单选题】设 是二阶齐次线性微分方程 的两个线性无关的特解,则 ( 为任意常数)( ).
【判断题】差动连接的单出杆活塞式液压缸,可使活塞实现快速运动。
【单选题】设 是二阶齐次线性微分方程 的两个线性无关的特解,则 ( 为任意常数)( ).