【单选题】Which of the following statments in NOT correct?
A.
The purpose of a power system is to deliver the power the customers require in real time, on demand, within acceptable voltage and frequency limits, and in a reliable and economic manner.
B.
In normal operation of a power system, the total power generation is balanced by the total load and transmission losses.
C.
The system frequency and voltages on all the buses are within the required limits
D.
According to optimal economic operation of power systems, economy is the only possible consideration.
【单选题】SECTION B INTERVIEW Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Questions 1 to 5 are based on an interview. At the end o...
A.
Only the diseased part of the body is treated.
B.
The doctor treats the whole person.
C.
The whole person and the diseased part are both treated.
【单选题】51~65 Cost as a Factor in Supply In a purely competitive market,the supplier of goods and services has no control over.the market price,because he produces too little to influence market conditions.Wi...