下列四种测定土体含水量的方法中,试验精度较高的方法是()。
A、酒精烧干法
B、烘干法
C、炒干法
D、微波加热法
参考答案:B
The fans were well behaved and the game was played without _____.[ ]
A. action
B. accident
C. event
D. matter
电动机轴承旷动会导至电机在运转时(),也就是转子与铁芯摩擦而使定子铁芯发热。