题目内容

Tungsten is selected to be the anode material because_____.

A. its low atomic number to the efficiency of radiation production
B. its high hardness to be bombard
C. its high melting point to the power rating
D. it’s easy to be manufactured

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Which of following materials is not used within an X-ray tube?

A. Rhenium
B. Radium
C. Tungsten
D. Graphite

Stationary X-ray tubes are normally utilized in the following applications except____.

A. Dental examination
B. Hand/foot examination
Computerized Tomography
D. Portable units

Regarding geometric unsharpness, which of the following is false?

A. Inversely proportional to focal spot size
B. Directly proportional to object-film distance.
C. Inversely proportional to focal spot-object distance.
D. Characterized by penumbra width.

X-ray production occurs at the _____.

A. Cathode
B. anode
C. Filament
D. stator

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