水静压强通常有如下三种表示方法（）A、绝对压力、标准压力、表压力 B、绝对压力、表压

比一比，再组词。

耍（　　）　坊（　　）　概（　　）　推（　　）

要（　　）　纺（　　）　慨（　　）　准（　　）

纪（　　）　证（　　）　倍（　　）　诚（　　）

记（　　）　征（　　）　陪（　　）　城（　　）

最早用牛痘预防天花的学者是（）。

A.Jenner

B.Koch

C.Paster

D.Bumet

E.Metchnikow

患者女性，60岁，5年前患乳腺癌手术治疗，术后化疗半年余。半年前发现在左锁骨上淋巴结肿大，无压痛，逐渐增多增大。2个月来出现胸憋、气短而就诊，化验检查：Hb109g/L，WBC6×10⁹／L，血沉40mm/第1小时末，X线胸片示右肺肿块阴影，心影向两侧扩大，心脏搏动减弱。

对确诊最简单易行的方法是（）

A.心电图

B.超声心动图

C.心包穿刺

D.X线胸片

E.胸部CT

压力容器定期检验分为（）。

A.外部检查

B.内外部检验

C.全面检验

D.表面探伤

Virtualization is an approach to IT that pools and shares (86) so that utilization is optimized and supplies automatically meet demand. Traditional IT environments are often silos, where both technology and human (87) . are aligned around an application or business function. With a virtualized (88) , people, processes, and technology are focused on meeting service levels, (89) is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization (90) that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

A．system

B．infrastructure

C．hardware

D．link