输入端有圆圈表示什么，输出端有圆圈表示什么？
A. 输入端有圆圈表示低电平有效，输出端有圆圈表示取反
B. 输入端有圆圈表示取反，输出端有圆圈表示低电平有效
To many businesspeople, one of the major attractions of a sole proprietorship is
A. the ability to obtain additional financial resources.
B. the protection of limited liability.
C. an unlimited lifespan.
D. the chance to be their own boss.
The ________ is the most common form of business ownership.
A. partnership
B. corporation
C. joint venture
D. sole proprietorship
Unlimited liability means
A. when you own your own business you are responsible for all the business debts.
B. you are only liable for the money you invest in the business.
C. as a franchisee your franchisor is responsible for the debts of the franchise.
D. you are liable for whatever advertising promises your firm makes.
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