被称为第一信使的是() A.cAMP B.激素 C.下丘脑 D.腺垂体 E.神经垂体

题型:单项选择题 B1型题

问题:

被称为第一信使的是()

A.cAMP

B.激素

C.下丘脑

D.腺垂体

E.神经垂体

考点:人体解剖学内分泌系统内分泌系统题库
题型:单项选择题 B1型题

 I can’t swim because I have a strong fear of water. Look back 1. ________

  my childhood experiences, I think that three reasons might          2. ________

  explain the fear. The first reason is that I was not allow to go       3. ________

  near the water when I was a child, for my mother had a            4. ________

  unreasonable fear of it. So, even as a child that I was taught to     5. ________

  see the water as something danger. Second, my eyes              6. ________

  became bad when I was five. If I took off my glass in the           7. ________

  water, I couldn’t see anything, or this increased my fear.          8. ________

  The worst part of my experience is that as a child I saw            9. ________

  a neighbor drowned. After then I have been more frightened.     10. ________

题型:单项选择题 B1型题

广告传播的第一个要素即“媒介”——所通过的渠道。

题型:单项选择题 B1型题

缓冲液pH值改变对电泳的影响主要表现为

A.偏离等电点越远蛋白质,带电愈多,电泳速度愈快
B.缓冲液pH越大所有蛋白质电泳速度越快
C.缓冲液pH值改变使介质两端电压改变
D.缓冲液pH越小所有蛋白质电泳速度越快
E.缓冲液pH值改变蛋白质的等电点

题型:单项选择题 B1型题

简述模仿自然说?

题型:单项选择题 B1型题

洪洁找到邻居石伟提出一起做石雕生意。石伟说:“我没有本钱。”洪洁说:“你有技术就行,不要你出本钱,我去接活,你来加工。”石伟表示同意。洪洁借来资金5万元,起名典雅石雕厂。洪洁负责购买石料,由石伟加工成石雕后由洪洁出售。后来洪洁又在石料厂赊欠了3万元石料。第一笔生意获利 2000元,洪洁分给石伟500元,第二笔生意获利3000元,洪洁分给石伟700元,第三笔生意亏本,石伟未分钱。第四批石雕在运输途中因发生交通事故全部毁损。洪洁所借的5万元和欠石料厂的3万元由谁承担偿还责任( )

A.均由洪洁承担

B.前者由洪洁承担,后者由洪洁和石伟连带承担

C.均由洪洁和石伟连带承担

D.前者由洪洁承担,后者由洪洁和石伟按盈余分配比例对石料厂偿还

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