题目内容

The man suggests taking on more debt.

A. 对
B. 错

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The company has enough cash to pay its debt.

A. 对
B. 错

The woman says there is an error on thebalance sheet.

A. 对
B. 错

在89c51单片机中,控制中断优先级的寄存器是()

A. TCON
B. IE
C. IP
D. SCON

89C51基本型单片机具有中断源的个数是()

A. 4
B. 5
C. 6
D. 7

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