在竞技活动中，运动员的体能水平集中表现于三个方面，下列哪一项不是的（）
A.技术
B.身体形态
C.身体机能
D.运动素质
参考答案：A
黄瓜浇水原则上应掌握（）。
An analyst does research about revenue recognition. Which of the following criteria is not required for the recognition of revenue from the sale of goods under U. S. Generally Accepted Accounting Principles (U. S. GAAP) （）
A. There is evidence of an arrangement between buyer and seller.
B. The seller is reasonable sure of collecting money.
C. The amount of revenue can be measured reliably.
