脊柱关节病的特征有()
A.炎性腰背痛
B.附着点炎
C.交替性臀区痛
D.腊肠指(趾)
E.发作性关节肿痛
参考答案:A, B, C, D
近年来开展的经颈静脉肝内门体分流术治疗肝硬化门脉高压症,其最大副作用是易诱发
A.感染B.肝肺综合征C.肝性脑病D.肝肾综合征E.电解质和酸碱平衡紊乱
A rectangle is defined to be "silver" if and only if the ratio of its length to its width is2 to 1. If rectangle S is silver, is rectangle R silver ?() (1)R has the same area as S. (2)The ratio of one side of R to one side of S is 2 to 1.
A.条件(1)充分,但条件(2)不充分.
B.条件(2)充分,但条件(1)不充分.
C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
D.条件(1)充分,条件(2)也充分.
E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.