软件需求分析的任务不应包括结构化程序设计。进行需求分析可使用多种工具,但 (20) 是不适用的。在需求分析中,分析员要从用户那里解决的最重要的问题是 (21) 。需求规格说明书的内容不应当包括 (22) 。该文档在软件开发中具有重要的作用,但其作用不应当包括 (23) 。
(21)处填()。 It doesn’t matter when or how long a
person sleeps, but everyone needs some rest to stay alive. That’s what all
doctors’ thought, until they heard about Jercy Page. Jercy Page, it was said,
never slept. Could this be true The doctors decided to see this strange man by
themselves. Jercy Page was ninety years old when the doctors came to his home in New Jersey. They thought for sure that he got some sleep of some kind. So they stayed with him and watched every movement he made. But they were surprised. Though they watched him hour after hour and day after day, they never saw Jercy Page sleeping. Actually, he did not even own a bed. He never needed one. The only rest that Jercy Page got was sitting in a comfortable chair and reading newspapers. The doctors were puzzled by this strange continuous sleeplessness. They asked him m A. needed some kind of sleep B. was too old to need any sleep C. needed no sleep at all D. often slept in chair [单选题]在汽轮机部件材料一定时,热应力大小主要取决于( )。
A.蒸汽温度; B.蒸汽压力; C.机组负荷; D.金属部件内温度分布。 [判断题]2.51 侧方停车项目完成时间超过规定时间的,评判为不合格。
A.正确 B.错误 [单选题]关于脊神经的描述,正确的是
A.共有30对 B.均为混合性神经 C.所有前支都交织成丛 D.所有后支仅含躯体感觉纤维 E.均为运动性神经 [简答题]货物列车在编组站、区段站发车前,有关人员应做到哪些?
[填空题]戏曲唱腔大致有三种类型,即抒情性唱腔、叙事性唱腔与()。
[单项选择]关于牙根的发育,错误的叙述是()
A. 多根形成时,首先在上皮隔长出2个或3个舌形突起 B. 上皮根鞘在规定的时间没有发生断裂,可形成侧支根管 C. 上皮隔的发育可形成根尖孔 D. 弯曲的上皮根鞘成为上皮隔,形状类似盘状 E. 上皮根鞘对于牙根的正常发育很重要 [单项选择]哮是反复发作性的一种病种以
A. 呼吸气促困难为主要表现 B. 咳嗽、咯血、潮热、盗汗、身体渐瘦为主要特征 C. 喉中哮鸣有声为特征 D. 咳吐浊唾涎沫为特征 E. 心悸、唇甲紫绀、胸腹胀满、浮肿 [单选题]随着温度升高,离子式介质的介电常数(____)。
A.减小 B.增大 C.没有变化 D.先升后降 [单项选择]查询设计器中包括的选项卡有( )。
A. 字段、筛选、排序依据 B. 字段、条件、分组依据 C. 条件、排序依据、分组依据 D. 条件、筛选、杂项 [判断题]电压无功自动控制可以对主变分接头的调节时间间隔进行设置。()
[判断题]当有毒气体泄漏造成人员死亡时,应将其立即移走,防止产生二次毒害。
A.正确 B.错误 [单选题]《铁路客运运价规则》第36条规定,包裹保价费按声明价格的()计算。
A.A、0.01 B.B、0.02 C.C、0.03 D.D、0.04 [多选题]升弓信号有( )。
A.左臂垂直高举,右臂前伸上下重复摇动。 B.白色灯光上下左右重复摇动 C.白色灯光作圆形转动 [判断题]学生有无工资收入,由学校确定,铁路凭学校发给的减价优待证售票。
A.正确 B.错误 我来回答: 提交
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