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【单选题】
What did Benjamin Franklin invent in 1752?A.
The first fishing rod.
B.
The first lightning rod.
C.
The first rod.
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【单选题】The simple electric circuit consist of a voltage source, some type of load, conductors, and a _____.
A.
logic
B.
switch
C.
hardware
D.
configuration
【单选题】The General Electric Company, often criticized for the complexity of its structure and the resulting opacity of its numbers, said yesterday that it would break GE Capital, by far its largest business,...
A.
six businesses
B.
sixteen businesses
C.
four businesses
D.
fifteen businesses
【单选题】下列关于栈的描述中正确的是( )
A.
在栈中只能插入元素而不能删除元素
B.
在栈中只能删除元素而不能插入元素
C.
栈是特殊的线性表，只能在一端插入或删除元素
D.
栈是特殊的线性表，只能在一端插入元素，而在另一端删除元素
【单选题】A student builds a simple circuit with a single resistor with resistance R and measures an electric potential difference Δ V across the resistor. Then, the student replaces the resistor with a new one...
A.
2I 2 = I 1
B.
I 2 =2 I 1
C.
4I 2 = I 1
D.
I 2 =4 I 1
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