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问题 多项选择题

通常情况下，胸部和四肢DSA摄影时增强器需要多大

A．9英寸

B．12英寸

C．14英寸

D．18英寸

E．16英寸

答案

参考答案：B,C,D

解析： 影像增强器输入屏大小有别，胸部和四肢DSA摄影时增强器需要12英寸、14英寸或16英寸。

单项选择题

Activity Based Costing (ABC) is an （） technique that allows an organization to determine the actual （） 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 IDEF0 （） modeling in conjunction with ABC to enable more effective business （） 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 （） to cost out measurements to business simplification and process improvement.

We use IDEF0 （） modeling in conjunction

A．activity

B． flowchart

C．design

D．management
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单项选择题

下列关于C++函数的叙述中，正确的是

A) 每个函数至少要具有一个参数
B) 每个函数都必须返回一个值
C) 函数在被调用之前必须先声明
D) 函数不能自己调用自己
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