Warning signs must be printed on the transport package for（）. A: inflammable materials B: explosive materials C: oxidant D: hygroscopic articles E: fragile articles
Warning signs must be printed on the transport package for（）. A: inflammable materials B: explosive materials C: oxidant D: hygroscopic articles E: fragile articles
20. Broccoli _____, can prevent the human body from being damaged by oxidant environment . A: is rich in vitamin C B: rich in vitamin C C: be rich in vitamin C D: are rich in vitamin C
20. Broccoli _____, can prevent the human body from being damaged by oxidant environment . A: is rich in vitamin C B: rich in vitamin C C: be rich in vitamin C D: are rich in vitamin C
φθ(Fe2+/Fe)＝－0.45V，φθ(Ag+/Ag)＝0.80V，φθ(Fe3+/Fe2+)＝0.77V，the strongest oxidant and reducing agent in the above pairsat standard state are respectively A: Ag+，Fe2+ B: Ag+，Fe C: Fe3+，Fe D: Fe2+，Ag E: Ag，Fe3+
φθ(Fe2+/Fe)＝－0.45V，φθ(Ag+/Ag)＝0.80V，φθ(Fe3+/Fe2+)＝0.77V，the strongest oxidant and reducing agent in the above pairsat standard state are respectively A: Ag+，Fe2+ B: Ag+，Fe C: Fe3+，Fe D: Fe2+，Ag E: Ag，Fe3+
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