【判断题】在R、L、C串联的交流电路中,当 < 时电路呈电容性,即电流超前于总电压。
【判断题】在R、L、C串联的交流电路中,当 < 时电路呈电感性,即电流滞后于总电压。
【判断题】在R、L、C串联的交流电路中,当 > 时电路呈电容性,即电流超前于总电压。
【判断题】根据《企业会计准则》的规定,我国境内的企业必须以人民币为记账本位币进行核算。
【单选题】Who repaired the machine last time when there was something wrong with it?
C.
The man from the shop.
D.
The repairman from the repair shop.
【单选题】When designing this machine, time factor is what we must first ___________.
A.
taking into consideration
B.
take into consideration
C.
taken into consideration
D.
took into consideration
【判断题】在R、L、C串联的交流电路中,当 > 时电路呈电感性,即电流滞后于总电压。
【单选题】V带传动设计中,选择小带轮基准直径的依据是