【判断题】对于理想电压源而言,不允许开路,但允许短路。
【判断题】对于理想电压源而言,不允许开路,但允许短路。
【单选题】组合家具可以分成容易组装及拆卸的部分,应用了()发明原理。
【多选题】please choose there types of remittcance
【单选题】Please choose the right statment on cutting symbol“┏1”
A.
The cutting position is along the horizontal direction
B.
The projection direction is from the left to the right
C.
The number of "1" means the positioning axis ①
D.
The line width (thickness) of the symbol should be 1.4b