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【简答题】
下面中哪两个方法,可以在 A的子类中使用。 class A { protected int m1(int a, int b) { return 0; } } A. public int m1 (int a, int b) { return 10; } B. private int m1 (int a, int b) { return 10; } C. private int m1 (int a, long b) { return 10; } D. public short m1 (int a, int b) { return 10; }
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皮皮学刷刷变学霸
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【简答题】阅读下列材料：
材料一西班牙和葡萄牙率先开辟新航线，征服了海洋、获得了世界。涌入的财富几乎都用来支撑宗教信仰的战争和殖民战争，而没有用来发展能够让国家真正富强起来的工商业。势力强大的王公贵族不愿意看到工商业的发展导致新兴势力的崛起。从16世纪下半叶起，流水一般涌入的财富又像水一样流走了，除了奢侈的社会风气，没有留下像样的产业。
材料二英国正在孕育人类史上一种崭新的生产方式；科学意识提高了英国人...
【简答题】一个 T 触发器,在 T=1 时,来一个时钟脉冲后,则触发器 ( ) 。
【简答题】蛋白激酶(protein kinase)
【多选题】How does cAMP exert its effects via activating cyclic- AMP-dependent protein kinase (PKA) ?
A.
Cyclic AMP exerts most of its effects by activating the enzyme cyclic- AMP-dependent protein kinase (PKA).
B.
This enzyme is normally held inactive in a complex with a regulatory protein. The binding of cyclic AMP to the regulatory protein forces a conformational change that releases the inhibition and unleashes the active kinase.
C.
Activated PKA then catalyzes the phosphorylation of particular serines or threonines on specific intracellular proteins, thus altering the activity of these target proteins.
D.
In different cell types, different sets of proteins are available to be phosphorylated, which largely explains why the effects of cyclic AMP vary with the type of target cell.
【简答题】蛋白激酶(protein kinase，PK)
【单选题】Which of the following is a protein kinase?
A.
erythropoietin receptor
B.
STAT5
C.
DAG
D.
EGF receptor
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