【单选题】
25T型客车的充电器进行模拟过分相试验：充电器每工作___，输入电源断电10 s，充电器应能正常工作，该项试验连续模拟10次
A. 10 min
B. 1 min
C. 5 min
D. 20 min
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答案
A
解析
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Although he kept trying and failing, I always [ ] the belief that he would succeed one day.
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The tax only affects people with an annual income over $200,000-[ ], it will only attect the very rich.
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