【多选题】按钢筋受力分,钢筋混凝土杆可分为( )。
【判断题】求解线性方程组的直接解法就是利用一系列公式进行有限步计算,直接得到方程组的精确解的方法。实际计算结果中仍会有误差,如舍入误差。
【单选题】Jenny________her father about her failure in the exam. [ ]
【简答题】完形填空 Learning to Accept I learned how to accept life as it is from my father. 1 , he did not teach me acceptance when he was strong and healthy, but rather when he was 2 and ill. My father was 3 a str...
【单选题】数据库benet中有个员工表employees,该表中有职务列,可以实现检查哪些员工的信息中没有填写职务一栏,应该使用子句()
A.
Select*from employees where职务=NULL
B.
Select*from employees where职务=’NULL’
C.
Select*from employees where职务ISNULL
D.
Select*from employees where职务IS‘NULL’
【单选题】设随机变量X服从正态分布N(μ,16),Y服从正态分布N(μ,25).记p=P(X≤μ-4),g=P(Y≥μ+5),则p与q的大小关系是().