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【单选题】
用新九分法评估成人烧伤面积,错误的是A.
头、面、颈部各为3%
B.
双上臂为6%
C.
躯干为27%
D.
双臀为5%
E.
双前臂为6%
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【简答题】为 实现均匀梯度的磁场,两块相同的磁铁(磁铁截面积及表面感应强度相同)相对位置,即N极与N极相对,两磁铁之间留一等间距间隙,霍尔元件平行于磁铁放在该间隙的中轴上。间隙大小要根据测量范围和测量灵敏度要求而定,间隙越小,磁场梯度就越大,灵敏度就 ( )
【简答题】According to the author, what is the central truth that tech executives should acknowledge if they want the tech world to move in the right direction?
【简答题】We Should All Grow Fat and Be Happy Here’s a familiar version of the boy-meets-girl situation. A young man has at last plucked up courage to invite a dazzling young lady out to dinner. She has accepte...
【简答题】High-tech machines have made life easier for millions around the world．However, some people still prefer low-tech ways of doing things．Here’s an example of why this is happening．You can microwave a fr...
【简答题】阅读理解。 High-tech machines have made life easier for millions around the world. However, some people still prefer low-tech ways of doing things. Here's an example of why this is happening. You can micro...
【简答题】High-tech machines have made life easier for millions around the world. However, some people still prefer low-tech ways of doing things. Here’s an example of why this is happening. You can microwave a...
【单选题】如图所示 , 一有限范围的匀强磁场 , 宽度为 d , 将一边长为 l 的正方形导线框以速度 v 向右匀速地通过磁场区域 , 若 d > l , 则导线框中不产生感应电流的时间应等于 ( )
A.
d/v
B.
L/V
C.
(d-L)/v
D.
(d-2l)/v
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