【单选题】With No.1 and No.2 alternators running in parallel and the KW loads equally shared, one alternator is drawing much higher current than the other. What does this indicate?
A.
The alternators are not generating the same voltage and should be adjusted on automatic voltage regulator rheostats.
B.
Alternators frequencies are different and should be adjusted on the governor speed controllers.
C.
Alternators are out of phase and should be tripped and paralleled again.
【简答题】单项选择 1. Julie’s father ________ to London last month. He ________ there three times. A. went; had gone B. has gone; has been C. went; has been D. has been; had gone 2. — Dave, we will leave in 10 m...
【简答题】I. Listen to a conversation 1 and choose the best answer to each of the following questions. 1. Why is Lucy eating less than before? A. She is ill. B. She wants to lose weight. C. She has no appetite ...
【单选题】The sentence "... , and no one has any idea where it will go as it meanders or leaps and sparkles or just glows" in Para. 2 employs the rhetorical device of _____.