新三个十条规定：低压客户受电装置验收合格后，（）个工作日内装表送电。
A、2
B、3
C、5
D、7
参考答案：C
32. I______him a lift to his house, but he ________ with thanks.
A．offered; answered
B．offered; declined
C．have offered; has declined
D．presented; answered
诊断二尖瓣狭窄最有意义的辅助检查是 ( )
A．X线胸片B．超声心动图C．心电图D．放射性核素检查E．心导管检查
