【单选题】对于数控机床闭环控制系统的伺服驱动元件,为了维护方便,最好采用( )。
【单选题】以下哪个选项不属于标题设计特点的有( )?
【判断题】The open-loop complex-conjugate poles and complex-conjugate zeros, if any, are always located symmetrically about the real axis, the root loci are always symmetrical with respect to this axis. Therefo...
【单选题】对于数控机床闭环控制系统的伺服驱动元件,为了维护方便起见,最好采用( )。 A.直流伺服电动机 B.交流伺
A.
8.对于数控机床闭环控制系统的伺服驱动元件,为了维护方便起见,最好采用( )。 A.直流伺服电动机
【单选题】对于数控机床闭环控制系统的伺服驱动元件,为了维护方便起见,最好采用( )。
【单选题】如果一切都满意,我们可以拟定一份正式合同了。
A.
Our current contract is about to expire, and we’ll need to discuss a new one.
B.
Shall we draw up a draft of the contract?
C.
If everything is satisfactory, we can draw up a formal contract.
D.
Is it possible to change the details of the contract after it’s made?