患者女，45岁，因“甲状腺巨大肿物”拟于全身麻醉下行甲状腺肿物切除术。患者无明显不适

严重挤压伤时要观察病人的尿量及颜色，主要目的是（）

A.预防休克

B.了解液体是否足够

C.了解是否发生肾衰竭

D.了解有无泌尿系损伤

患者，男性，68岁。突发剧烈压榨样胸痛、呕吐伴窒息感1小时入院。查P110次/分，BP85/60mmHg，心电图示V1～V4导联ST段呈弓背向上抬高，律不齐。

该病人出现哪项心律失常，需立即消除（）

A.房颤

B.窦性心动过速

C.室上性心动过速

D.室性心动过速

E.Ⅰ型房室传导阻滞

运动训练是在教练员的指导下运动员独立完成的体育活动。 ( )

(66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed,length bit string. (67) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection. (68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an opt~electrical converter and the final segment is a shared coaxial cable. (69) is a device used to connect two separate network that use different communication protocol. (70) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

A．RTP

B．RTTP

C．FTP

D．NNTP

B超对下列哪项诊断最准确

A．胆囊结石

B．急、慢性胆管炎

C．肝内胆管结石

D．急、慢性胆囊炎

E．肝外肝管结石