单项选择题

A ______ infected computer may lose its data.

A. file
B. database
C. virus

D. program
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单项选择题
（）is not the tool name for quality controlling used in the figure below.

A. Cause and Effect Diagrams
B. Ishikawa Diagrams
C. Fishbone Diagrams
D. Scatter Diagram
单项选择题
Which of the following is not part of the quality assurance process ______
A. Operational definitions

B. Quality policy
C. Quality audits


D. Quality improvement
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