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【单选题】
已知25℃时，E【图片】(Fe3+,Fe2+)=0.77V, E【图片】(Sn4+,Sn2+)=0.15V。今有一电池，其电池反应为2Fe3+(a) +Sn2+(a)= 2Fe2+ (a) +Sn4+ (a)，则该电池的标准电动势E【图片】（298.15K）为A.
1.39V
B.
0.62V
C.
0.92
D.
1.07
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举一反三
【单选题】【例题·单选题】(2014年)下列各项中,不属于库存商品的是( )。
A.
接受外来材料的代制品
B.
寄存在外销售的商品
C.
为外单位加工代修品
D.
已完成销售手续，客户未领取的商品
【单选题】If I( )long enough to have a job,1 would choose to be a doctor,( )those AIDS patients.
A.
had lived helping
B.
should live help
C.
were to live helping
D.
should have lived help
【简答题】阅读理解。 We are often asked to make a speech in life. Most of us are afraid of it and don't do a good job. Here are some steps to make your speech a successful one. First of all,find out everythin...
【单选题】为女患者进行留置导尿时，操作不正确的是（）
A.
初步消毒顺序为由外而内，由上而下
B.
先铺好孔巾，再戴无菌手套
C.
用润滑液棉球润滑导尿管前端
D.
导尿管插入深度为4~6cm，见尿后再插5~7cm
E.
如果误入阴道，应更换导尿管后重新插入治疗性药物，则应保留30分钟后再引流出来
【简答题】阅读短文，选择正确答案。 We are often asked to make a speech in life. Most of us are afraid of it and don't do a good job. Here are some steps to make your speech a successful one. First of all, find out e...
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