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【简答题】
The doctors _______ the medicines to the people in the flood area. A. distributed B.packed C.prayed D.undertook 2.Much of the news provided by this newspaper is _______, not foreign. A. domestic B.strain C.purchase D.murder 3.He tried to _______relations with his former wife but he failed. A. measure B.maintain C.shelter D.reply 4.He _______ to study harder in the future so that he could have more opportunities to find a better job. A. resolved B.resorted C.requested D.reserved 5.The _______ work continued for more than a week but there was still no sign of the missing boy. A. research B.rescue C.vessel D.vast
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皮皮学刷刷变学霸
举一反三
【单选题】下列说法不正确的是 ( )
A.
K sp 只与难溶电解质的性质和温度有关
B.
由于K sp (ZnS)>K sp (CuS)，所以ZnS沉淀在一定条件下可转化为CuS沉淀
C.
其他条件不变，离子浓度改变时，K sp 不变
D.
两种难溶电解质作比较时，K sp 小的，溶解度一定小
【单选题】下列说法不正确的是（ ）
A.
K sp 只与难溶电解质的性质和温度有关
B.
由于K sp （ZnS）＞K sp （CuS），所以ZnS沉淀在一定条件下可转化为CuS沉淀
C.
其他条件不变，离子浓度改变时，K sp 不变
D.
两种难溶电解质，K sp 小的，溶解度一定小