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【多选题】
Which of the following belong to discretionary fixed costs? There may be more than one correct answer.A.
Insurance costs
B.
Advertising
C.
Depreciation on buildings and equipment
D.
Research and development costs
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【简答题】89 C 52 单片机 有 三 个 16 位 的 可编程定时 / 计数器, 都可以工作在定时和计数方式。两者的共同点是定时和计数都是通过 __ ___ 实现的,不同之处在于 定时是对 _____ 进行计数,而计数是对 _____ 进行计数。
【单选题】When and where to build the new factory______ yet.
A.
is not decided
B.
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D.
have not decided
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