挑战习题
1/5单选题
难度:

1.托里拆利测量大气压强值实验如图所示. 当时的大气压强等于多高水银柱所产生的压强?(  )
A 750mm
B 760mm
C 770mm
D 780mm
提示1:
IOWcqOaJmOmHjOaLhuWIqeWunumqjOS4re+8jOWkp+awlOWOi+aJgOiDveaUr+aMgeeahOawtOmTtuafseeahOmrmOW6puaYr+aMh+eOu+eSg+euoeWGheawtOmTtumdouWIsOawtOmTtuanveS4reawtOmTtumdoueahOWeguebtOmrmOW6pu+8jOWmguWbvuaJgOekuuWPr+W+l+WIsOetlOahiOOAgg==
正确答案:QQ==
PGRpdj7lpoLlm77miYDnpLrvvIznjrvnkoPnrqHlhoXmsLTpk7bpnaLliLDmsLTpk7bmp73kuK3msLTpk7bpnaLnmoTlnoLnm7Tpq5jluqbkuLo3NTBtbe+8jOWboOatpO+8jOW9k+aXtueahOWkp+awlOWOi+W8uuetieS6jjc1MG1t6auY5rC06ZO25p+x5Lqn55Sf55qE5Y6L5by677yb5pWF6YCJQeOAgjwvZGl2Pg==