单项选择题

商标是区分商品和服务来源的一种标记。（） A. 对 B. 错

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不定项选择

In the case of prestige goods, the demand curve sometimes slopes upward.

A．正确
B．错误

单项选择题

Which of the following best describes a principal budget factor?

A．A factor that affects all budget centres
B．A factor that is controllable by a budget centre manager.
C．A factor which limits the activities of an organisation.
D．A factor that the management accountant builds into all budgets.