下列刀具材料中,最耐高温的是()
A.高速钢
B.硬质合金
C.立方氮化硼
D.金刚石
参考答案:C
头痛而胀,甚则头胀如裂,发热或恶风,面红目赤,口渴喜饮,大便不畅,溲赤便秘,舌尖红,苔薄黄,脉浮数,宜选用
A.川芎茶调散
B.通窍活血汤
C.半夏白术汤
D.通窍活血汤
E.芎芷石膏汤
A fire in a ballast pumproom can be brought under control with minimal impact on stability by().
A.cooling the outside bulkheads with water
B.shutting all sources of air into the compartment
C.closing the sea chest
D.flooding the compartment with salt water