铲运机多采用分层填筑，白填白压方法是：先两侧后中间．土层均布，并在运土和回空的运行中有意识地将全部铺土层辗压，最后才用压路机压实。
参考答案：对
某男，29岁。近一月来失眠多梦，伴头晕耳鸣，胸闷不舒，痰多，烦热，舌红苔黄腻，脉弦数，临床诊断最可能是（）。
A.心血虚证
B.心阴虚证
C.痰火扰心证
D.胆郁痰扰证
E.心火亢盛证
Even to many scientists, the problems resulted from the conflict between economic gains and environmental protection are simply ______.
A. insoluble B. infallible C. inferable D. ineffable
