某黄色溶液中可能含有下列离子：K+、NH
、Fe3+、Ba2+、SO
、HCO
、Cl—、S2—，为检验其成分，先对溶液进行初步分析。下列判断中，不正确的
| A．溶液中存在大量Fe3+ | B．溶液中可能存在大量Ba2+ |
| C．溶液中不存在大量HCO和S2— |
D．溶液可能呈强碱性 |
相关试题
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
I can’t leave. She told me that I ______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—— ______ , as a matter of fact
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