按照标准化法的规定,国家标准制定的部门不包括()。
A.国务院标准化行政主管部门
B.工商行政管理部门
C.国家质量技术监督局
D.法律规定的国务院其他主管部门
参考答案:B
下列离子方程式正确的是
A.用碳酸钠溶液吸收少量二氧化硫:
2CO32-+SO2+H2O=2HCO3-+HSO3-
B.硅酸钠溶液中通人足量二氧化碳:SiO32—+2CO2+3H2O==H4SiO4↓+2HCO3—
C.向硫酸氢钾溶液中加入Ba(OH)2溶液至刚好沉淀完全:2H++SO+Ba2++2=2H2O+BaSO4↓
D.小苏打溶液中加入过量的澄清石灰水:2HCO3— + Ca2+ + 2 ="=" CaCO3↓+2H2O + CO32-
根据短文内容及图片提示完成下面的短文。
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Come and s 小题9: for yourself at Mr. Cool’s C 小题10:Store.