你可能感兴趣的试题
CH4、NH3、H2O、HF HF、H2O、NH3、CH4 H2O、HF、CH4、NH3 HF、H2O、CH4、NH3、
±0.20%CH4 ±0.10%CH4 ±0.01%CH4 ±0.05%CH4
≥1.0%CH4;≥1.0%CH44;<1.0%CH4 ≥1.5%CH4;≥1.5%CH44;<1.0%CH4 ≥1.0%CH4;≥1.5%CH44;<1.0%CH4 ≥1.5%CH4;≥1.0%CH44;<1.0%CH4
±0.20%CH4 ±0.10%CH4 真值的±10%CH4 真值的±20%CH4
≥1.0%CH4;≥1.0%CH4; ≥1.5%CH4;≥1.5%CH4; ≥1.0%CH4;≥1.5%CH4; ≥1.5%CH4;≥1.0%CH4;
“N2”、“N2-CO2”、“N2-CH4”、“CH4”; “CH4”、“N2-CH4”、“N2-CO2”、“N2”; “N2-CO2”、“N2”、“N2-CH4”、“CH4”; “CH4”、“N2-CH4”、“N2”、“N2-CO2”。
0.005%CH4 1%CH4 0.015%CH4 2%CH4
±0.1%CH4 ±0.2%CH4 0.1%CH4 0.2%CH4
0.04%CH4,0.4%CH4 0.1%CH4,0.4%CH4 0.02%CH4,0.4%CH4 0.1%CH4,0.5%CH4
0.1%CH4,0.1%CH4 0.1%CH4,0.4%CH4 0.01%CH4,0.1%CH4 0.01%CH4,0.01%CH4
≥0.5%CH4,≥0.5%CH4,<0.5%CH4 ≥1.5%CH4,≥1.5%CH4,<1.5%CH4 ≥1.0%CH4,≥1.0%CH4,<1.0%CH4