【单选题】在编制程序的时候,应该采纳的原则之一是__(1)__。开发软件时对提高开发人员工作效率至关重要的是__(2)__。软件工程中描述生命周期的瀑布模型一般包括计划、__(3)__、设计、编码、测试、维护等几个阶段,其中设计阶段通常又可以依次分为__(4)__和__(5)__两步。空白(5)处应选择()
【多选题】下列说法正确的是?
A.
与mRNA序列相同的链为有义链或编码链,另一条链为模板链或反义链
【单选题】明挖扩大基础施工过程中应注意,如用机械开挖基坑,挖至坑底时,应保留不小于 ( )cm厚度的底层,在基础浇注圬工前用人工挖至基底标高。
【单选题】在编制程序的时候,应该采纳的原则之一是__(1)__。开发软件时对提高开发人员工作效率至关重要的是__(2)__。软件工程中描述生命周期的瀑布模型一般包括计划、__(3)__、设计、编码、测试、维护等几个阶段,其中设计阶段通常又可以依次分为__(4)__和__(5)__两步。空白(4)处应选择()
【判断题】明挖扩大基础施工的难易程度与地下水处理的难易无关。
【简答题】n. a probability or chance for future success p_____
【单选题】Which of the following scenarios will yield a nonprobability sample?
A.
The subjects of the sample are chosen on the basis of known probability.
B.
Items or individuals are chosen without regard to their probability of occurrence.
C.
Every individual or item from the frame has an equal chance of being selected. Selection may be with replacement or without replacement.
D.
Decide on a sample size, n; divide the frame of N individuals into groups of k individuals where k = N/n; randomly select one individual from the first group; select every kth individual thereafter.
【单选题】If X is a binomial random with n = 8 and p = 0.6, what is the probability that X is less than or equal to 2?