题目内容

X-rays _____.

A. always travel in a straight line
B. can be influenced by an electrical field
C. are absorbed equally by the materials they pass through
D. None of the above

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Bremsstrahlung production of X-rays produces radiation that is composed of ____.

A. a small number of very defined energies
B. a continuous spectrum of energies over some range
C. radiation of only one energy
D. none of the above

Which of the following is required to produce an x-ray?

A source of electrons
B. A large potential difference
C. A vacuum
D. All the above

Most of the energy of the electrons from the cathode is converted to _____.

A. X-rays
B. Scatter
C. Heat
D. primary beam

Upon completing an X-ray exposure and turning the equipment off, _____.

A. personnel should wait for a few minutes before entering the exposure area.
B. personnel should wear a lead-lined apron before entering-the exposure area.
C. personnel should enter the exposure area without fear of radiation exposure.
D. personnel should take a reading with a survey meter before entering the exposure area.

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