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问题 单项选择题 A型题

彩色多普勒血流成像仪性能评价指标不正确的是（）。

A.血流量--定量、半定量分析

B.空间分辨力--细微分辨

C.速度分辨力--对比分辨

D.实时动态分辨力--单位时间成像帧速率

E.检查灵敏度--对低速血流的检测

答案

参考答案：A

解析：使用彩色多普勒血流成像仪，可以对血流量进行定量、半定量应用分析，不属于仪器性能评价指标。

单项选择题

对临床诊断困难的急性腹痛病例，可进行（）

A.选择性血管造影术

B.X线钡餐检查

C.内镜检查

D.放射性核素肝、胆、胰扫描

E.诊断性腹腔穿刺
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Dear Guests,
We would like to reduce the impacts this event has on the environment to a minimum (最小值), therefore we would like to encourage you to take part in our "Eco-Stay" program during your stay in this hotel.
To save water and reduce water pollution, we do not change the towels every day.
To reduce wastes of resource and energy, such single-use items as toothbrush, comb (梳子) and razor (剃须刀) will not be provided at the time of your check-in.
To reduce the impacts that waste has on the environment, we would like to encourage you to take part in our waste sorting and recycling program. Please place paper, glass and metal in the plastic bag in each room. The materials in the bag will be collected after the meeting, and be delivered to a waste collection station in the city where they will be further sorted and delivered to recycling facilities.
Eco-stay Guidance
The guidance intends to reduce the impacts on (46) .
The hotel will not change the towels every day in order to (47) .
(48) will not be provided in order to reduce wastes of resource and energy.
The purpose of the waste(49)program is to reduce the impact of the waste.
The materials will be delivered to a (50) .
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