According to these two letters, which of the following statements is true
A. Confused was glad to visit his roommate's house.
B. Confused was a little worried because he had no money for presents.
Confused should arrive at his roommate's house as late as possible.
D. Confused should eat the food up even if he didn't like the food.
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若菜点的成本率为50%,则其定价系数为1/2。()
A. 对
B. 错
出材率是表示原材料利用程度的指标。()
A. 对
B. 错
某毛料单价12元,出材率为60%,则净料成本应为20元/kg。()
A. 对
B. 错
固定资产的损耗也是广义成本中的一项。()
A. 对
B. 错