题目内容
下列事例中,属于减小压强的是( )
A. [Failed to download image : http://192.168.0.10:8086/QBM/2018/5/6/1939678463827968/1941000295079936/STEM/a54e5646db12443bb83a6a7544bc4da4.png] B. [Failed to download image : http://192.168.0.10:8086/QBM/2018/5/6/1939678463827968/1941000295079936/STEM/712d8eb7edcd43daa5885a23626997a4.png] C. [Failed to download image : http://192.168.0.10:8086/QBM/2018/5/6/1939678463827968/1941000295079936/STEM/1059213a2f9844fa8a3013f6c3fd6d22.png] D. [Failed to download image : http://192.168.0.10:8086/QBM/2018/5/6/1939678463827968/1941000295079936/STEM/794f53a1ce284f7c87e95bec832401c2.png]
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