工作台在进给过程中,若超载或遇到意外过大阻力时,进给运动不能自动停止。这是安全离合器的扭矩调节得太大的缘故。
参考答案:对
24岁女性,一周前因停经41天,妊娠试验阳性,行吸宫流产术,今晨突然晕倒在地,体温37.5℃,血压75/52.5mmHg,脉搏100次/分,下腹压痛及反跳痛明显,外阴少量流血,宫颈举痛明显,宫口闭,子宫稍大,稍软,右侧似有一包块边缘不清,压痛。查WBC10×109/L,N0.70。最准确的诊断是()。
A.人工流产不全
B.宫颈粘连
C.急性阑尾炎
D.流产后右附件炎
E.右输卵管妊娠破裂
(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)处填()。
A.Structured analysis
B.Information Engineering
C.Discovery Prototyping
D.bject-Oriented analysis