利用反馈归零法获得N进制计数器时,若为异步置零方式,则状态Sn只是短暂的过渡状态,不能稳定,会立刻变为状态So。
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16.What does the speaker talk about first in his speech?The speaker first gives _________________ about his company.
17.What are the main products of the company?Clothing, ____________________________ and household products.
18.How long has the company been in business?Over ________________________________________.
19. Where can people find job openings at Family Dollar?On its ___________________________________________.