0. 25 mol A的质量是16 g,A的相对分子质量(或相对原子质量)是 [ ]
A.32 g·mol-1
B.64×10-3 kg·mol-1
C.32
D.64
答案:D
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Tell him ______ the light.
A.to turn
B.not to turn on
C.to not turn
D.not to turn