反映压力机生产率的技术参数是( )。
A．滑块行程次数
B．滑块行程
C．封闭高度
D．公称压力
参考答案：A
_____ all the demands had been refused _____ to go on strike.
A．Only; did the workers decide
B．Not until; the workers decided
C．Not until; did the workers decide
D．Only after; the workers decided
下列哪项不是影响局部麻醉药吸收的因素
A．药物剂量B．术前用药C．局部麻醉药性能D．血管收缩药使用E．作用部位
