关于变压器（330MW机组）冷却系统运行方式，正确的是（）。
A.强迫油循环风冷变压器运行时，必须至少投入3组冷却器运行；
B.冷却装置由两路电源供电，分别为电源I和电源II，两路电源可互为备用；
C.每组冷却器的运行方式选择可以有工作、辅助、备用、停运四种状态；
D.当工作或辅助冷却器任一组因故停止运行时，备用冷却器自动投入运行。
参考答案：A, B, C, D
Denny Crook was a famous photographer（摄影师）. He traveled all over the world, taking pictures for magazines and newspapers, and won many prizes. “I’ll do anything to get a good photo,” he often said. “I’ll go anywhere at any time, even if it is ______.” And he told the ________. He had photos of earthquakes, forest fires, floods and even wars. If something interesting happened, Denny went to photo it. He was a married(已婚的) man and his wife often asked him to take her with him, but he always _____.”I’ll travel for my work, not for ________,” he told her . “You won’t enjoy yourself, and I won’t have ________ to look after you. Sometimes there’s not even anywhere to ________, and I have to sleep outside. I often don’t have a good ________or a bath for days. You won’t like it.” “Denny, I’m not a child,” his wife didn’t ________. “I can look after myself. Please take me with you the next time you go overseas.” Denny did not say anything, but he ________ about it, and when he was asked to go to Africa he said to his wife, “You can come to Africa with me if you want to. I’ve got to take photos of wild ________there. It should be interesting and not too uncomfortable.” His wife was very ________, and at first she had a very enjoyable time. Then Denny went to ________ some lions to photo. His wife went with him, but before long they became separated（分开）. She walked down one path while he walked down the other. Suddenly, Denny heard her ________. He ran back and saw her running towards him. A huge lion was running after her. Quickly Denny took his camera out of its case and ________ it at his wife and the lion. Then he shouted, “________, woman! I can’t get you both in the picture!”
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