一曲线经过点(1,1)且切线在纵轴上的截距等于切点的横坐标,则该曲线的方程为() A

题型:单项选择题

问题:

一曲线经过点(1,1)且切线在纵轴上的截距等于切点的横坐标,则该曲线的方程为()

A.A

B.B

C.C

D.D

考点:水利水电工程第一章高等数学第一章高等数学题库
题型:单项选择题

失眠是指()

A.入睡困难

B.睡眠维持困难

C.早醒

D.睡眠期间打呼噜

E.白天存在睡眠剥夺的表现

题型:单项选择题

对X线质的叙述,错误的是()

A.X线质又称X线硬度

B.波长越短,X线质越硬

C.波长越短,穿透力越强

D.波长越短,X线频率越低

E.波长越短,X线光子能量越大

题型:单项选择题

19世纪中叶,俄国化学家门捷列夫对化学学科的巨大贡献是(  )

A.提出了原子学说

B.提出了元素周期律

C.提出了分子学说

D.制定了科学的元素周期表

题型:单项选择题

女患,70岁,突然出现不能说话,右上下肢无力,约20分钟恢复,反复发作,发作后进行神经系统检查未见异常。诊断首先考虑为()

A.局限性癫痫

B.脑栓塞

C.癔症发作

D.颈内动脉系统短暂性脑缺血发作

E.椎-基底动脉系统短暂性脑缺血发作

题型:单项选择题

Activity Based Costing (ABC) is an (126) technique that allows an organization to determine the actual (127) associated with each product and service produced by the organization without regard to the organizational structure. This chapter explains some of the uses and benefits of Activity Based Costing. We use IDEFO (128) modeling in conjunction with ABC to enable more effective business (129) design decisions.

In order to achieve the major goals of business process improvement, process simplification and improvement, FAA managers need to fully understand the cost, time, and quality of activities performed by employees or machines throughout an entire organization. ABC methods enable (130) to cost out measurements to business simplification and process improvement.

(128)是()

A.activity

B.flowchart

C.design

D.management

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