单项选择题
The consistently replicated finding that parent charact...
判断题The consistently replicated finding that parent characteristics explain a greater proportion of the variance in child outcomes than the measured impacts of program variables highlights the need for new intervention strategies that focus more explicitly on strengthening the capabilities of parents and other caregivers.
有抗冻要求的混凝土用细骨料中总的泥块含量不得大于( )。A.0.5%B.0.6%C.0.8%D.1%
单项选择题有抗冻要求的混凝土用细骨料中总的泥块含量不得大于( )。
上(下)三角形行列式的值等于主对角线上元素的乘积。
判断题上(下)三角形行列式的值等于主对角线上元素的乘积。