关于对半卡环叙述错误的是()
A.含有颊舌两相对应的卡环臂
B.含有近远中两个支托
C.多用于孤立的前磨牙
D.也可用于孤立的磨牙
E.固位作用好,但无支持作用
参考答案:E
外伤性颅内幕上血肿造成小脑幕切迹疝的早期表现是()
A.意识丧失,血肿同侧瞳孔先缩小后散大,对光反射消失,肌张力完全丧失
B.意识丧失,血肿对侧瞳孔先缩小后散大,对光反射消失,去大脑强直
C.意识丧失,血肿同侧瞳孔散大,对光反射消失,双侧肢体瘫痪,去大脑强直
D.意识丧失,血肿对侧瞳孔散大,对光反射消失,同侧肢体瘫痪
E.意识丧失,血肿同侧瞳孔散大,对光反射消失,对侧肢体瘫痪
In fixed price contract which of the following holds true . A. More risk is placed on the buyer B. If the amount of the contract is exceeded the seller is not obligated to perform further unless the buyer increases the funds C. The seller agrees to perform a service or furnish supplies at the established contract price D. The seller agrees to use his best effort to fulfill the contract within the estimated contract amount