题目内容

How many lobes are in the left lung?

A. 1
B. 2
C. 3
D. 4

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What structure separates the thoracic cavity from the abdominal cavity?

Aortic arch
B. Mediastinum
C. Diaphragm
D. Chest wall

After a film is exposed, the target-film distance is doubled. The exposure time necessary to obtain a second film of equal density to the first film is

A. Same as first film
B. Two-fold
C. Three-fold
D. Four-fold

If the mA is increased while the kVp and exposure time are kept constant, the resulting films will _____.

A. be lighter
B. be darker
C. remain the same
D. have a special pattern

In X-radiography, the ability to penetrate the test object is governed by _____.

A. source-to-film distance
B. Time
C. Kilovoltage
D. milliamperage