输入期初余额时，上级科目的余额和累计发生额数据需要手工输入。()
A. 正确
B. 错误
会计电算化使会计管理由事后管理向事中控制、事先预测转变。()
A. 正确
B. 错误
What surprises Martha about other companies？
A. They don't monitor their competitor's activities.
B. They are unaware of their own weaknesses.
C. They don't act on the information they have.
对于一些重要的文件(资料)，当发现其被病毒感染时应尽快进行备份。()
A. 正确
B. 错误
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