下列哪项不符合绞窄性肠梗阻的临床表现
A.肠鸣音亢进,气过水声
B.早期出现休克
C.腹部压痛明显伴肌紧张
D.腹部不对称
E.腹部绞痛为持续性
参考答案:A
链球菌感染引起下列哪些疾病()。
A.风湿性心脏病
B.反应性关节炎
C.骨性关节炎
D.急性肾小球肾炎
E.结节红斑
An analyst obtains statistics on return information for Vay Industries and Ranch Meatpacking as follows:
Based on this information, what is the covariance between the two sets of returns, and what is the correlation coefficient Covariance Correlation coefficient()①A. 5.98 0.32
②B. 5.98 0.42
③C. 6.52 0.32
A.①
B.②
C.③