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【单选题】
下面说法中错误的是（ ）
A.
相对论速度变换自动遵从光速不变原理。
B.
由相对论速度变换公式不可能得到大于真空中光速 c 的速度。
C.
相对论速度变换在低速（ ）情况下会过渡到经典力学中的速度变换。
D.
如果两个惯性系只有沿 x 轴的相对运动，由于在兹坐标变换式中， ，故在相对论速度变换中，肯定会有
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为腹式呼吸的主要肌肉
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分隔胸腔和腹腔
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he dissected the electronic components out of a radio
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【单选题】听力原文：M: So, what do you mean we have a lot to talk about my son? What is the problem with him? W: Oh, I am afraid you didn't know he had made up all sorts of reasons to skip school recently. Q: What a...
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【单选题】细菌细胞膜有诸多功能，但不包括（　）。
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参与细胞呼吸过程
B.
细菌遗传物质的复制
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进行生物合成
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营养物质的摄取与代谢物的排出
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【单选题】How did the writer get to know that the old man in the hotel had been a mountaineer?
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【简答题】在“构建和谐校园”的活动中，大明被评为“文明之星”你是他的好朋友，请用简短的英语对他 进行介绍，并写一句你最想地他说的话。 Daming is my good 1________. He is quite friendly and helpful. He is always trying to help 2_______. He does well in all his 3_________. A...
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【单选题】老年人适宜的居室温度应为
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查看完整题目与答案
【单选题】She always knew her son was talented because_________.
A.
he dissected the electronic components out of a radio
B.
he behaved differently from an ordinary school child
C.
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D.
he showed an aptitude in building electronic appliances
查看完整题目与答案
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【单选题】细菌细胞膜有诸多功能，但不包括（　）。
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参与细胞呼吸过程
B.
细菌遗传物质的复制
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进行生物合成
D.
营养物质的摄取与代谢物的排出
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形成中介体
查看完整题目与答案
【单选题】How did the writer get to know that the old man in the hotel had been a mountaineer?
A.
He learned about it from the landlord.
B.
Because the old man was always alone with his wine and memories.
C.
He learned by the way the old man looked and behaved.
D.
It was only his guess.
查看完整题目与答案
【单选题】关于膈的描述错误的是
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中心部为腱膜，称中心腱
B.
主动脉裂孔在第 12 胸椎前方，有主动脉和胸导管通过
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腔静脉孔约平第 8 胸椎水平，有上腔静脉通过
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位于胸腹腔之间
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