前后房容积分别为()
A.0.3ml,0.1ml
B.0.2ml,0.06ml
C.0.1ml,0.06ml
D.0.2ml,0.1ml
E.0.3ml,0.06ml
参考答案:B
创伤性溃疡的溃疡特点为()
A.溃疡较小,表面微凹陷,少量黄色渗出,周围充血
B.溃疡深达黏膜下层,边缘高起,咽部及口角可见瘢痕
C.溃疡较深,边缘不整,基底有浸润
D.溃疡与刺激物相邻,周缘白色水肿
E.溃疡基底暗红色桑葚样肉芽肿,边缘鼠啮状
叙述柴油机燃油供给系统的功用。