关于脑栓塞的临床表现错误的是()。
A.起病急骤
B.多数患者年龄较轻
C.常见脑膜刺激征
D.常发生局灶性癫痫发作、偏瘫和失语
E.多患有风湿性心脏病
参考答案:C
Suppose V1=<R,+>,V2=<R, ·>,where R is the set of real numbers, +and · are respectively addition and multiplication. Let f: R→R and {(x) = 10x, which of the following propositions is true ( )
A.f is an injective homomorphism from V1 to V2
B.f is a surjective homomorphism from V1 to V2
C.f is an isomorphism from V1 to V2
D.none of the above
阿托品中毒时可用下列药物治疗()
A.毒扁豆碱
B.酚妥拉明
C.东莨菪碱
D.后马托品
E.山莨菪碱