题目内容
（请给出正确答案）
[主观题]
Viruses can't be transmitted by（74)and（75)is not a common route for virus infiltration.A．b
Viruses can't be transmitted by(74)and(75)is not a common route for virus infiltration.
A．booting a PC from an infected medium
B．accessing to ROM
C．opening an infected file
D．executing an infected program
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