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【单选题】
If method A calls method B, and method B calls method C, and method C calls method D, when method D finishes, what happens?A.
control is returned to method A
B.
control is returned to method B
C.
control is returned to method C
D.
the program terminates
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举一反三
【单选题】Which energy change corresponds to the enthalpy change of atomisation of hydrogen at 298 K?
A.
.the bond energy of a H – H bond
B.
.half the bond energy of a H – H bond
C.
.minus half the bond energy of a H – H bond
D.
.minus the bond energy of a H – H bond
【单选题】Which of the following is true according to the passage?
A.
Man's energy cycle can be changed easily.
B.
Some family quarrels are caused by unawareness of energy cycle.
C.
Getting up early in the morning is not easy.
D.
Everyone has a daily energy cycle but a lazy one.
【单选题】Which energy change corresponds to the first ionization energy of potassium?
A.
2
B.
5
C.
4
D.
3
E.
6
【简答题】进气道的作用？什么是进气道总压恢复系数？
【单选题】Which energy change corresponds to the electron affinity of fluorine?
A.
2
B.
5
C.
4
D.
1
E.
6
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