在探究“光对鼠妇生活的影响”实验中，不科学的一项是 A．为保证实验结果的不同是否

女性，20岁。发热、咳嗽、流涕2周后热退，但又出现胸闷、心悸，心率120/min，心律失常，偶闻早搏。心电图：低电压，T波低平。心肌酶谱检查CK-MB 801U/L。最有可能的诊断是

A．扩张型心肌病

B．急性心包炎

C．病毒性心肌炎

D．风湿性心肌炎

E．风湿性心脏病

玉米淀粉

(71) analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the (72) for designing and constructing an improved system. (73) is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called (74) . (75) is another such technique that integrates data and process concerns into constructs called objects.

（73）是（）

A. Structured analysis

B. Information Engineering

C. Discovery Prototyping

D. Object-Oriented analysis

香槟酒诞生于（）。

A.法国

B.瑞士

C.意大利

D.西班牙

汽包水位低于极限值时，应该（）。

A.紧急停炉；

B.申请停炉；

C.减负荷；

D.加强给水。