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【简答题】
回答下列有关人体生命活动调节的问题。 (1)寒冷刺激下,皮肤中的____产生兴奋,兴奋传递至____中的体温调节中枢,引起机体产生相应生理活动以维持正常体温。 (2)寒冷刺激下,血液中甲状腺激素含量增加,但并不至于过高,原因是该过程存在____。 (3)某自身免疫病是由于机体内产生的抗体与促甲状腺激素受体结合引起的,患者会出现甲状腺增生、甲状腺激素浓度偏高以及低烧的症状,由此推测,该抗体最可能发挥了类似于____激素的功能。
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【简答题】随着社会生产的发展、人口增多,对能源的需求量逐年增加,全球石油储量下降,寻求和制备代号称“黑金”的新能源已经成为紧迫任务.化学工作者正在研究以天然气和醇类合成优质汽油的方法.合成路线如下: 已知:(1)凡与醛基直接相连的碳原子上的氢称为α一H原子,在稀碱溶液的催化作用下,一个醛分子上的α一H原子连接到另一个醛分子的氧原子上,其余部分连接到羰基碳原子上生成羟基醛,如: (2)2R-CH 2 -Cl+...
【单选题】对发展中国家而言,首先要摆脱贫穷。要摆脱贫穷,就要找出一条比较快的发展道路。
A.
For developing nations, first of all, they will throw off poverty. To throw it off, they have to find a way to develop fairly rapidly.
B.
To developing nations, first of all, they will throw off poverty. To throw it off, a way has to be found to develop fairly rapidly.
C.
For developing nations, the first thing is to throw off poverty. To do that, they have to find a way to develop fairly rapidly.
D.
To developing nations, the first thing they will do is to throw off poverty. To throw it off, they have to find a way to develop fairly rapidly.
【简答题】商业发票中价格由 、 、 和 组成。
【单选题】I felt rather _____ when I felt home for the first time to go on an exchange visit to America.
A.
happy
B.
proud
C.
nervous
D.
exciting
【单选题】对发展中国家而言,首先要摆脱贫穷。要摆脱贫穷,就要找出一条比较快的发展道路。
A.
For developing nations, first of all, they will throw off poverty. To throw it off, they have to find a way to develop fairly rapidly.
B.
To developing nations, first of all, they will throw off poverty. To throw it off, a way has to be found to develop fairly rapidly.
C.
For developing nations, the first thing is to throw off poverty. To do that, they have to find a way to develop fairly rapidly.
D.
To developing nations, the first thing is to throw off poverty. To do that, a way has to be found to develop fairly rapidly.
【单选题】对发展中国家而言,首先要摆脱贫穷。要摆脱贫穷,就要找出一条比较快的发展道路。
A.
For developing nations, first of all, they will throw off poverty. To throw it off, they have to find a way to develop fairly rapidlly.
B.
To developing nations, first of all, they will throw off poverty. To throw it off, a way has to be found to develop fairly rapidly.
C.
For developing nations, the first thing is to throw off poverty. To do that, they have to find a way to develop fairly rapidly.
D.
To developing nations, the first thing is to throw off poverty. To do that, a way has to be found to develop fairly rapidly.
【单选题】对发展中国家而言,首先要摆脱贫穷。要摆脱贫穷,就要找出一条比较快的发展道路。
A.
For developing nations, first of all, they will throw off poverty. To throw it off, they have to find a way to develop fairly rapidlly.
B.
For developing nations, the first thing is to throw off poverty. To do that, they have to find a way to develop fairly rapidly.
C.
To developing nations, first of all, they will throw off poverty. To throw it off, a way has to be found to develop fairly rapidly.
D.
To developing nations, the first thing is to throw off poverty. To do that, a way has to find to develop fairly rapidly.
【简答题】标准ASCII码使用 位二进制进行编码。
【单选题】对发展中国家而言,首先要摆脱贫穷。要摆脱贫穷,就要找出一条比较快的发展道路。
A.
For developing nations, first of all, they will throw off poverty. To throw it off, they have to find a way to develop fairly rapidly.
B.
To developing nations, first of all, they will throw off poverty. To throw it off, a way has to be found to develop fairly rapidly.
C.
For developing nations, the first thing is to throw off poverty. To do that, they have to find a way to develop fairly rapidly.
【单选题】对发展中国家而言,首先要摆脱贫穷。要摆脱贫穷,就要找出一条比较快的发展道路。
A.
For developing nations, first of all, they will throw off poverty. To throw it off, they have to fin
B.
To developing nations, first of all, they will throw off poverty. To throw it off, a way has to be f
C.
For developing nations, the first thing is to throw off poverty. To do that, they have to find a way
D.
To developing nations, the first thing is to throw off poverty. To do that, a way has to be found to
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