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【单选题】
将一种已知其准确浓度的试剂溶液（称为标准溶液）滴加到被测物质的溶液中，直到化学反应完全时为止，然后根据所用溶液的浓度和体积求得被测组分含量的分析方法称为A.
光学分析法
B.
重量分析法
C.
仪器分析法
D.
滴定分析法
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】The couple set ________ some money every month for their future use even though their income can only make ends meet.
【单选题】The couple _____ some money every month for their future use even though their income can only make ends meet. [ ]
A.
put off
B.
put up
C.
set down
D.
set aside
【单选题】Some companies have succeeded at an international level even though they have
A.
produced inferior goods.
B.
failed to adapt products for local markets.
C.
ignored the standards set by their competitors.
D.
reduced the standard of the service they offer.
【简答题】In some countries people favor (stay) ______ together even though there is much more space.
【单选题】下列有关氮芥类抗肿瘤药物的叙述不正确的是
A.
环磷酰胺是第一个上市的氮芥类抗肿瘤药物
B.
分子结构中有烷基化部分和载体部分
C.
双β-氯乙氨基是抗肿瘤活性的功能基，属于烷基化部分
D.
改变载体部分，可以提高药物的选择性，降低毒性
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