下列属于适度宽松的货币政策有
①降低商业银行存贷款利率 ②将国有商业银行改制为股份制银行
③实行房贷优惠利率 ④降低商品的销售价格
A.①②
B.①③
C.②③
D.②④
答案:B
A community nurse is performing a physical assessment on an 18-month-old child. Which of the following would be best
A. Carry out the assessment from head to toe.B. Assess motor function by having the child run and walk.C. Have the mother hold the toddler on her lap.D. Assess the respiratory and cardiac systems first.
A.运动过程中小球、地球和弹簧组成的系统的机械能守恒
B.t2时刻小球的加速度为零
C.t2~t3这段时间内,小球的动能先增加后减少
D.t2~t3这段时间内,小球的动能与重力势能之和在增加