含Ag电极的AgNO3溶液用盐桥与含Zn电极的Zn(NO3)2溶液相连, 这一电池表达式正确的是 . 已知[°(Zn2+/Zn)=-0.76V, °(Ag+/Ag)=0.80V]
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
2002年新配方口服补液盐(ORS)溶液的张力是
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