交流同步电动机主要用下列()方式进行调速,效率最高高
A.变极对数调速;
B.无换向器电动机调速;
C.串极调速;
D.变频调速
参考答案:B
The project was carefully planned, or a great deal of money ________.
A.will lose
B.will be lost
C.would have lost
D.would have been lost
有限合伙人转变为普通合伙人的,对其作为有限合伙人期间有限合伙企业发生的债务承担无限连带责任。 ( )