X线管组件散热方式中,效果最好的是()。
A、密封管套,自然散热
B、密封管套,风扇散热
C、闭路油循环自然散热
D、闭路油循环风冷散热
E、冷水管套内循环散热
参考答案:E
In relation to contract law:
(b) explain any FOUR exceptions to the general rule that contracts entered into by minors are void. (8 marks)
决策硬技术