【单选题】【消耗次数：1】
乙酰水杨酸用中和法测定时，用中性醇溶解供试品的目的是为了
①
防止供试品在水溶液中滴定时水解
②
防腐消毒
③
使供试品易于溶解
④
控制pH值
⑤
减小溶解度
参考答案：
复制
纠错
相关题目
【单选题】
下列关于溶解度的叙述错误的是
①
溶解度检查主要适用于难溶性药物
②
溶解度检查法分为转蓝法和浆法
③
溶解度检查法规定的温度为37℃
④
溶解度与体内的生物利用度直接相关
【单选题】
随着温度和压力的变化，气体溶解度的变化为（ ）。
①
温度升高，压力降低，溶解度增大
②
温度升高，压力升高，溶解度减小
③
温度降低，压力降低，溶解度减小
④
温度降低，压力升高，溶解度增大
随机题目
【简答题】
Translate the following sentence into ChineseAt the meeting, they discussed how to keep the lines of communication open between teachers and students.
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[hug; flatten; ancestor; amazing; solemnly; comfort; awful; desperately; uproot; cousin]3. Whether its a dead[填空1]or God, whatever supernatural agent it is, if you think theyre watching you, your behavior is going to be affected.
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]3. This means that across the country all students will[填空1]computers.
【简答题】
Directions: Fill in the blanks with the words given below. Change the form if necessary.[fee; react; expand; besides; quantity; stay; highly; device; customer; commercial]7. We have what we need in[填空1], but the quality is not satisfactory.
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[vain; frame; curve; twist; comb; collapse; scatter; scratch; rebuild; harsh]9. The[填空1]sets off your painting very well.
【简答题】
改革开放以来，社会主义现代化建设取得了哪些巨大成就？
【简答题】
新民主主义革命的开端是[填空]。
【简答题】
中国同盟会的机关报是[填空]。
【简答题】
新民主主义社会中，社会主义性质的经济是[填空]。