单选题Which of the following statements about cooling is true？（）AAdapter cards （e.g. modems） do not add to the heat generated in a computer case.BBus mastering reduces the amount of heat generated inside a computer case.CRemoving expansion slot covers can compromise cooling airflow design.DPeriodic cleaning of the computer components inside the case has no effect on cooling efficiency.
单选题
Which of the following statements about cooling is true？（）
A
Adapter cards （e.g. modems） do not add to the heat generated in a computer case.
B
Bus mastering reduces the amount of heat generated inside a computer case.
C
Removing expansion slot covers can compromise cooling airflow design.
D
Periodic cleaning of the computer components inside the case has no effect on cooling efficiency.
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