搜题请搜索小程序“爱下问搜题”
问题
判断题
网点在冲正交易时，正确金额如果人为输入错误，不能再次进行冲正交易。(五级、四级)
答案
参考答案：对
判断题
防止毒物危害的最佳方法是使用无毒或低毒的代替品。
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选择题
_____ his homework in time, he had to stay up late into the night.
A. Finishing
B. Having finished
C. To finish
D. To have finished
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