机车辅助电路是给主电路提供冷却用风，压缩空气等各辅机供电的电路，它是保证主电路（）和实现性能所必不可少的电路。
参考答案：发挥功率
同义句。
1. The hairband must be Lucy's.
The hairband must ______ ______ Lucy.
2. Trekking through the Amazon Jungle is much more difficult than sailing across the Pacific.
Sailing across the Pacific isn't _____ difficult _____ trekking through the Amazon Jungle.
3. The ship is too small to carry so many passengers.
The ship isn't ______ ______ to carry so many passengers.
4. Someone saw the young man steal the old man's wallet.
The young man was _____ _____ steal the old man's wallet.
5. Bill used to like apples better than bananas.
Bill ______ apples______ bananas.
6. There isn't anything wrong with your computer.
______ is ______ with your computer.
男孩，10个月，确诊川崎病后出院，2个月后猝死于家中，死前无明显诱因，其死因可能为
A．脑出血B．冠状动脉瘤破裂C．脑栓塞D．心肌炎E．心包炎
