More efforts, as reported, ______in the years ahead to accelerate the supply-side structural reform.
A:are made
B:will be made
C:are being made
D:have been made
口46÷7,如果商是三位数,口最小是____,商若是两位数,口最大是____。
西欧殖民主义造成的后果是( )
以抛物线C的顶点为圆心的圆交C于A、B两点,交C的标准线于D、E两点.已知|AB|= 42 ,|DE|= 25 ,则C的焦点到准线的距离为( )
现用质量分数为98%,密度为1.84g/cm3的浓硫酸来配制200ml 1mol/L的稀硫酸,可供选择的仪器有:①量筒 ②烧杯 ③胶头滴管 ④玻璃棒.