重庆一号线地铁列车地铁牵引逆变器制动电阻的作用为()。
A.吸收反馈电能
B.提供制动信号
C.输出制动信号分压
D.限制制动电流
参考答案:A
治疗痛痹,应对证选用()。治疗行痹,应对证选用()。
A.肾俞、关元
B.膈俞、血海
C.肝俞、太冲
D.大椎、曲池
E.阴陵泉、足三里
An instruction is made up of operations that (106) the function to be performed and operands that represent the data to be operated on.For example,if an instruction is to perform the operation of (107) two numbers,it must know (108) the two numbers are.The processor’s job is to (109) instructions and operands from memory and to perform each operation.Having done that,it signals memory to send it (110) instruction.
A.skip
B.smile
C.smoke
D.specify