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【单选题】
下列关于氨基酸密码的叙述哪一项是正确的?
A.
由DNA链中相邻的三个核苷酸组成
B.
由mRNA上相邻三个核苷酸组成
C.
由tRNA结构中相邻三个核苷酸组成
D.
由rRNA中相邻的三个核苷酸组成
E.
由多肽链中相邻的三个氨基酸组成
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【判断题】[判断题]米浆类面坯的特性为:体积稍大,有细小的蜂窝,口感酥脆适口。()
A.
正确
B.
错误
【单选题】咳嗽、咯血入院,入院后诊断为支气管扩张。今晨在病房突然剧烈咳嗽、咯血80ml,随即烦躁不安,呼吸困难,口唇发绀,大汗淋漓,双手乱抓,两眼上翻。护土应首先采取的抢救措施是
A.
立即输血、输液
B.
胸腔穿刺抽气
C.
立即人工呼吸
D.
立即体位引流,清除血块
E.
立即吸氧、注射呼吸兴奋剂
【单选题】米浆类面坯的特性为( )。
A.
体积稍大,有细小的蜂窝,口感黏软适口
B.
黏韧软糯
C.
有一定的韧软和可塑性
D.
可包多卤的馅心,吃口润滑
【简答题】There are many ways for us to reduce(减少) waste. For 16 , we can reduce paper and plastic bags. We can also recycle newspapers, glass, and cans(易拉罐) to make new things. Here are some useful ways to 17 ...
【判断题】串联电路具有分压效应,并联电路具有分流效应。
A.
正确
B.
错误
【简答题】当形体两相邻表面相切时,由于相切是光滑过渡,所以相切处不存在交线,但应注意 的位置。
【单选题】由于两形体相切,在相切处光滑过渡的,所以在相切处应 ?
A.
画分隔线
B.
不画分隔线
【单选题】Which of the following ways is NOT mentioned in the passage to reduce stroke risk?
A.
Giving up smoking
B.
Lowering blood pressure
C.
Drinking lightly and occasionally
D.
Taking medicine on time
【单选题】Which of the following statements is TRUE?
A.
We can find some ways to remove stress.
B.
Stress is always harmful to people.
C.
It is easy to change the habit of keeping oneself busy with work.
D.
Different people can withstand different amount of stress.
【单选题】Testing Times Researchers are working on ways to reduce the need for animal experiments, but new laws may increase the number of experiments needed. The current situation In an ideal world, people wou...
A.
Y
B.
N
C.
NG
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