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【单选题】
直接酸碱滴定法测定阿司匹林原料含量时，用中性乙醇作溶剂的目的为A.
增加其酸性
B.
便于观察终点
C.
消除空气中二氧化碳的影响
D.
防止阿司匹林水解
E.
促使阿司匹林发生中和反应
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【单选题】通过现实生活和艺术中的美来打动学生的感情，使他们在心灵深处受到感染或感化，而培养他们具有正确的审美观念和鉴赏美、创造美的能力的教育叫做（）
A.
德育
B.
智育
C.
体育
D.
美育
【简答题】补全对话。根据下面对话的情景,在空白处填入适当的语句,使对话内容完整。 A:Hello,Lin Tao. B:Hello,everyone. You are all here. 1. A:We are planning for a good-bye party , for the 3-year middle school life will be over. B:That sounds good....
【单选题】which of the following can not be used to refer to the type of luggage that passengers are allowed to carry along in the passenger compartment of a vehicle instead of moving to the cargo compartment?
A.
carry-on baggage
B.
hand luggage
C.
cabin baggage
D.
registered baggage
【简答题】Gestures are a ____1___of nonverbal communication in which ____2___ bodily actions are used to communicate important message. Gestures include movement of the hands, face, or other parts of the body. ...
【简答题】根据对话内容，选择方框中适当的句子，使对话完整、通顺。 Lin Tao：Hi, Sam! How are you today? Sam：小题1: What about you? Lin Tao：I’m OK. Are you free tomorrow? Sam：小题2: Lin Tao：We’re going to have a swim. Sam：小题3: Can I come? Sam：小题...
【简答题】根据句意,用适当的单词补全句子。 1. __________are primarily hand-held portable devices designed to protect against rain or sunlight, and are size for personal use. 2. A ___________ is often used when you want to bind...
【判断题】Japanese hand gestures are never used in reference to a person who is absent at the time. ()
A.
正确
B.
错误
【判断题】Leg aids are used in conjunction with the riders seat and hand to communicate to the horse the direction, the type of gait and the level of activity that is required by the rider.
A.
正确
B.
错误
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