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【单选题】
装有可燃液化气体的压力容器突然泄漏，被延迟点燃，泄漏的液态部分可以形成（ ）。A.
火球
B.
C.
喷射火
D.
蒸气云燃烧
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举一反三
【单选题】阅读下列程序: public class ThreadTest5 extends Thread{ int i = 0; public static void main(String[] args){ Thread t1 = new ThreadTest5(); t1.start(); } public void run( ){ while( i<=2 ){ System.out.println("...
A.
程序不能通过编译，因为在ThreadTest5类中不能定义两个run()方法
B.
程序运行结果为：i = 0 i = 1 i = 2
C.
程序运行结果为：j = 6 j = 7
D.
程序运行结果为：i = 0 i = 1 j = 6 i = 2 j = 7
【简答题】有机化合物分子中的碳原子可分为()、()、()、()4种类型
【单选题】What should non-scientists do to ensure their quality of life?
A.
Seek personalized medical assistance from doctors.
B.
Acquire a basic understanding of medical science.
C.
Have their individual genome sequenced.
D.
Make informed use of animal models.
【简答题】50. What does the author say
about midlife today? (2.0分)A. It
is more meaningful than other stages of life. B. It
is likely to change the narrative of one’s life. C. It
is more important to those with...
【简答题】（8分）在有机化合物分子中，常把连有4个不同的原子或原子团的饱和碳原子称为不对称碳原子，可用*C标记，例如： 丙烷进行氯代反应中，可分离出4种二氯代物A、B、C、D，分子式均为C 3 H 6 Cl 2 。当它们进一步氯代为三氯代物时，A只有一种三氯代物，B有2种三氯代物，C和D各有3种三氯代物，已知C具有不对称碳原子，试写出A、B、C、D的结构简式：A________ B___________ C...
【简答题】在有机化合物分子中,可根据一个碳原子所连的碳原子数目不同,可把碳原子分为 、 、 、 碳原子。
【单选题】The passage suggests that an assumption underlying non-economist social scientists dismal of economics as dismal is that
A.
positive-sum outcomes cannot, by the definition of the power model, exist
B.
all social sciences founded on pragmatism instead of idealism are dismal
C.
zero-sum interactions models are inherently optimistic in their view of the future
D.
scarcity does not necessarily exist as a controlling factor in social systems
E.
economics is anti-utopian by nature, proposing a more realistic view of the future
【判断题】Dictation: Many non-scientists are helping with the research by examining satellite images.
A.
正确
B.
错误
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