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甲容器内有物质A和物质B，其质量比是2：3，乙容器内有物质B和物质C，其质量比是1：2，丙容器内有物质A和物质C．现将甲容器中的物质以1：2：3的比例取出，混合，则所得新的混合物中，A，B，C三种物质的质量比是183：152：385．容器内物质A和物质C的质量比．
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举一反三
【简答题】Dialogue 1 Vocabulary 1. steal /sti:l/ n. a great bargain 2. buck / bʌk/ n. (informal) one dollar 3. break even end up with no profit or loss at the end of some business activity 4. throw in add or in...
【简答题】Part 1 Vocabulary Listen to the audio, and write down the word that the audio explains about.
【单选题】Dialogues 1 Vocabulary 1. broccoli /ˈbrɒkəli/ n. vegetable with a thick green stem and a tree-like dark green top 2. spinach /'spimtj/ n. dark green leafy vegetable 3. whip up: prepare or cook food qu...
A.
In the morning.
B.
In the afternoon.
C.
In the evening.
【简答题】vocabulary 1 Listen to a recording and write down the words you hear. ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ __________...
【单选题】Dialogue 3 Vocabulary 1. hon /hʌn/ n. short for "honey" 2. hump /hʌmp/ v. a word showing disbelief 3. cut back on: to reduce 4. cardiovascular system: body's blood circulation system including your he...
A.
To play basketball with friends from work.
B.
To try out for the company baseball team.
C.
To get in shape and compete in a cycling race.
【单选题】下面属于康德不可知论观点的是()。
A.
感觉是我们唯一知道的东西
B.
人的认识只能停留于现象界，自在之物是认识达不到的
C.
无物存在
D.
即使有物存在而又可知，这样的知识也无法传授给别人
【简答题】Dialogue 2 Vocabulary 1. psyc h / saik/ abbr . psychology 2. in the nick of time at the last possible moment . 3. hit the books study , especially with particular intensity Listen t o the conv e rsati...
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