存在于多根牙格根之间,有防止多根牙向冠方移动的作用
A.牙槽嵴纤维B.斜纤维C.根尖纤维D.根间纤维E.越隔纤维
参考答案:D
男性,56岁,确诊高血压病6年,用药不规律,近1年6次出现心前区压迫感,多在饱餐后发生,24小时前因情绪激动,突然感觉头痛、心悸、恶心、呕吐,并逐渐加重,出现烦躁,视物模糊。查体:脉搏100次/分,呼吸18次/分,血压220/1lOmmHg。
患者最可能的诊断是()。
A.高血压病Ⅱ期
B.高血压危象
C.高血压脑病
D.恶性高血压
E.老年人高血压
The controlling depth of the river is().
A.the minimum depth of the river prescribed in the channel maintenance program
B.the edge of a dredged channel
C.the highest level to which the river may rise without flooding
D.the least available water in a channel which limits the draft of boats and tows