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【单选题】
关于疾病治疗证据的评价,下列说法正确的是A.
绝对危险降低率越小，说明治疗产生的临床效果越大
B.
干扰是指对照组的患者接受了试验组的防治措施，使得试验组和对照组间的疗效差异减小
C.
需要治疗的人数（NNT）越大，临床治疗效果越好
D.
NNT不宜进行不同疾病间比较，尤其效应结果不同时
E.
效应强度的精确度通常用95%的可信区间（95% CI）表示,可信区间越大，可信度越高，研究结果的精确性越好
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【单选题】What does the woman say about the plants in the Amazon rainforest?
A.
There are so many plants that it is hard to see the sky
B.
Many plants are sick because of the lack of sunlight
C.
The plants are more spectacular than she has ever dreamed
D.
The plants struggle hard to see the sun or the sky above
【简答题】压力管道按其结构布置形式分为 _______，_______;_______;地下压力管道几种类型。
【单选题】What does the woman say about the plants in the Amazon rainforest?
A.
There are so many plants that it is hard to see the sky.
B.
Many plants are sick because of lack of sunlight.
C.
The plants are more spectacular than she has ever dreamed.
D.
The plants struggle hard to see the sun or the sky above.
【单选题】选中设计中心的图块,然后按住鼠标左键将其拖到绘图区,释放鼠标后,则()。
A.
该图块可按1:1插入
B.
可在命令行设置该图块的比例
C.
可将该图块的基点插入
D.
不能插入
【单选题】What does the woman say about the plants in the Amazon rainforest?
A.
There are so many plants that it's hard to see the sky
B.
Many plants are sick because of the lack of sunlight
C.
The plants are more spectacular than she has ever dreamed
D.
The plants struggle hard to see the sun or the sky above
【单选题】What does the woman say about the plans in the Amazon rainforest?
A.
There are so many plants that it is hard to see the sky.
B.
Many plants are sick because of the lack of sunlight.
C.
The plants are more spectacular than she has ever dreamed.
D.
The plants struggle hard to see the sun or the sky above.
【简答题】In the Amazon, many trees have been cut down to grow and raise .
【简答题】In the Amazon, many trees have been cut down to grow 1)_____ and raise 2)_____.
【单选题】选中“设计中心”中的图块,然后按住鼠标左键将其拖到绘图区中,释放鼠标后,则( )。
A.
该图块可按1:1插入绘图区
B.
可在命令行中设置该图块的比例
C.
可将该图块的基点插入到所需位置
D.
不能将图块插入绘图区
【简答题】气体灭火系统按灭火方式和结构形式各分为几种类型?其含义是什么?
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