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【单选题】
下列关于KMnO 4 滴定法的叙述中,正确的是( )A.
可以不用氧化还原指示剂指示终点
B.
KMnO 4 标准溶液可以直接法配置
C.
可用HCl控制溶液的酸度
D.
KMnO 4 的氧化能力较强,此法具有很好的选择性
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反馈参考答案：
举一反三
【简答题】已知x = [1,2,3,2,3],执行语句x.pop()后,x的值为:
【简答题】已知 x = [1, 2, 3, 2, 3] ,执行语句 x.pop( 0 ) 之后, x 的值为
【单选题】已知 x = [1, 2, 3, 2, 3],执行语句 x.remove(2) 之后,x的值为( )。
A.
[1, 3, 3]
B.
[1, 2, 3, 3]
C.
[1, 3, 2, 3]
D.
[1, 2, 2, 3]
【多选题】关于派车提货,下列说法正确的是( )。
A.
派车提货是指运输企业接受客户订单后,上门取货
B.
取货的车辆只限于卡车
C.
取货的费用只计算车辆的装卸费用
D.
同一份订单的货物可以进行拆分,以制定合理的装车计划
【多选题】What did Chinese staffs do when they noticed Benjamin failing to insert the key into the slot?
A.
Come over to watch Benjamin and attempt to assit.
B.
Hold onto his hand and, gently but firmly, guide it directly toward the slot, reposition it as necessay, and help him to insert it.
C.
Smile to me as if awaiting a thank you.
D.
On occasion, frown to me as if considering us to be neglecting our parental duties.
【简答题】已知 x = [1, 2, 3, 2, 3],执行语句 x.pop() 之后,x的值为
【简答题】已知 x = [1, 2, 3, 2, 3],执行语句 x.pop() 之后,x的值为
【简答题】已知x=[1,2,3,2,3]，执行语句x.remove(2)之后，x的值为____________。
【单选题】What did Pennington do to help Benjamin develop his talent?
A.
He took him to see painting exhibitions.
B.
He provided him with painting materials.
C.
He sent him to a school in Philadelphia.
D.
He taught him how to make engravings.
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