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【单选题】
以下哪点是截(凿)桩头的清单工程量计算规则 ( )A.
以根计量，按设计图示数量计算。
B.
以吨计量，按设计图示尺寸以质量计算。
C.
以米计量，按设计图示尺寸以桩长计算（不包括桩尖）
D.
以面积计量，桉设计图示尺寸以面积计算
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反馈参考答案：
举一反三
【单选题】Which of the following is not necessary for a random sample from a population of 15 individuals?
A.
Each individual in the population has a 1/15 probability of being selected
B.
The selection of one individual is independent of the selection of any other individual
C.
After 15 selections, each individual must have been selected exactly one time
D.
The individual obtained on any specific selection must be unpredictable
【判断题】In a sample of size 40, the sample mean is 15. In this case, the sum of all observations in the sample is ∑ Xi = 600.
A.
正确
B.
错误
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