单项选择题
A user cannot undock a laptop from the docking station. Which of the following is the MOST likely cause?（）
A. The laptop is not turned off
B. The power cable is not unplugged
C. The lock button is set to lock
D. The ACPI settings are configured improperly
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A user reports that the laser printer is constantly jamming on humid days. Which of the following is the MOST likely resolution to the problem?（）
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