试题与答案

下列说法不正确的是 [ ] A.同温下,0.1mol·L-1 NH4Cl溶液中N

题型:选择题

题目:

下列说法不正确的是  [ ]

A.同温下,0.1 mol·L-1 NH4Cl溶液中NH4+的浓度比0.1 mol·L-1氨水中NH4+的浓度大

B.用稀盐酸洗涤AgCl沉淀比用水洗涤损耗AgCl多

C.电解饱和食盐水时,阴极得到氢氧化钠溶液和氢气

D.除去溶液中的Mg2+,用OH-比CO32-效果好,说明Mg(OH)2的溶解度比MgCO3的小

答案:

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参考答案:A, B, C, D解析:电子银行渠道主要包括:网上银行(利用计算机和互联网)、电话银行(利用电话等声讯设备和电信网络)、手机银行(利用移动电话和移动通信网络)、自助终端(多媒体自动终端、自助上...

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题型:阅读理解

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Tongue twisters usually do not have much meaning. They are just designed to improve people’s ability(能力)to pronounce words. Although they may be very difficult, these exercises are very important to people who are trying to speak English correctly. This is because tongue twisters help people to tell the differences between similar sounds.

So if you wish to pronounce words more smoothly, you’d better try picking out some tongue twisters and practicing them.

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A.listening

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