题目内容

How much seconds is equivalent to one millisecond (ms)?

A. 10
B. 0.1
C. 0.01
D. 0.001

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The atomic number represents ___.

A. number of electrons
B. number of protons
C. number of neutrons
D. number of atoms

The source of electrons for the X-ray production is the ____.

A. anode
B. cathode
C. filament
D. focal spot
E. B & C
F. A & D

What is the unit of current

A. kvp
B. Ohms
C. Volts
D. Amperage

An "ion" is a charged part of an atom that can have either a +/- charge.

A. True
B. False

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