多发性硬化是一种()
A.螺旋体感染病
B.脱髓鞘疾病
C.维生素B缺乏病
D.脂类代谢病
E.神经变性病
参考答案:B
I would rather ________ TV at home than ________ to the cinema.
A.watch; go
B.watched; go
C.to watch; going
D.watching; to go
汽轮机冷态与热态的划分依据是()。