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【判断题】
Z坐标的运动由传递切削力的主轴所决定,与主轴轴线平行的标准坐标轴即为Z坐标。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】听力原文：W: How was the English exam you took yesterday? M: Not as easy as I expected. I did fairly well on the reading section but I made quite a few mistakes on grammar. Q: What did the man say about hi...
A.
His errors were mainly in the reading pan.
B.
It wasn't very challenging to him.
C.
It was more difficult than he had expected.
D.
He made very few grammatical mistakes in his test.
【简答题】（10分）通过一年的化学学习，我们已经掌握了实验室制取气体的有关规律。请结合下图回答： （1）实验室若用A装置作为制取O 2 的发生装置，则反应的化学方程式为 _____ _______，该反应是 反应；若用双氧水和二氧化锰反应制取氧气，应选择的发生装置为_____，写出该反应的化学方程式_________ _____ 。 （2）已知甲烷密度比空气小，极难溶于水。实验室可用加热无水醋酸钠和碱石灰的...
【简答题】听力原文：Woman: Of course, I was looking forward to it. I mean, it meant seeing the results of quite a lengthy process to find the right person, which I myself had invested quite a lot of time in. It's a ...
【单选题】听力原文：M: You look very nice in this dress. Perhaps the waist is a little too tight. Would you like to try a size larger? W: Well, the style. isn't quite what I had in mind. Thank you anyway. Q: Why did...
A.
It was too small.
B.
It was too loose.
C.
It was too expensive.
D.
She doesn't like the style.
【简答题】通过一年的学习，我们能用学到的化学知识解决许多问题： （1）衣服上的油污可以用汽油洗净，其原理是______； 也可以用加了洗涤剂的水洗净，其原理是______． （2）胃酸过多的病人，常服用含有氢氧化镁的药物以减轻病痛，其反应的化学方程式 为______． （3）若发生重金属离子中毒，可以用来解毒的食物是______． （4）使溶解在水中的空气逸出可以采用______减小气体溶解度的方法．
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