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题目内容
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听力原文：M Thank you for calling Green Valley automotive. How may I help you？
W Hello, I have a question about routine oil changes. I just bought a new car and was wondering how often I should come in and have the oil changed.
M It's really important to have the oil in your car changed every 10,000 km to keep your car's engine running smoothly. If you don't do it regularly the engine will start to overheat and deteriorate. It's not expensive to have done; you should really bring it in. How many kilometers are on the car？ W Right now the odometer says it has 10,500 km, I'll bring it right in.
What does the man do？
A．He sells cars.
B．He fixes cars.
C．He imports cars.
D．He works for an oil company.
更多“听力原文：M Thank you for calling Green Valley automotive. How may I help you？ W Hello, I h”相关的问题
第4题
关于生长激素的叙述，下列哪项是错误的
A、生长激素是由神经垂体细胞合成和分泌的
B、80%的生长激素分子量为22kD，20%的为20kD
C、GH呈脉冲分泌，并存在昼夜节律
D、GH一般在深睡眠的早期分泌最高
E、GH的表达释放受控于下丘脑神经元分泌的GHRH和GHIH
第5题
A. 腺垂体合成和分泌生长激素（GH）部分缺乏
B. B.腺垂体合成和分泌生长激素（GH）完全缺乏
C. C.GH结构异常
D. D.GH受体缺陷
E. E.同时伴有甲状腺机能低下
第6题
A、腺垂体合成和分泌生长激素(GH)部分缺乏
B、腺垂体合成和分泌生长激素(GH)完全缺乏
C、GH结构异常
D、GH受体缺陷
E、同时伴有甲状腺机能低下
第7题
A．人幼儿期生长激素分泌不足
B．人幼儿期甲状旁腺分泌不足
C．人幼儿期肾上腺皮质分泌不足
D．人幼儿期甲状腺分泌不足
E．人幼儿期胰岛素分泌不足
侏儒症的病因是
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