【单选题】He devoted all the time _____ his research .
【单选题】女性,55岁,白带多,接触性出血2个月余,3年前曾因宫颈糜烂行宫颈激光治疗。妇科检查:外阴阴道未见异常,宫颈肥大糜烂、质脆,子宫及双附件未见异常,为明确诊断,首先检查项目应是( )。
【简答题】LC 并联谐振回路失谐时,若 f < f 0 ,回路呈 。
【单选题】All his time _______research on Chinese history, he has no time for outdoor activities.
【判断题】该表述是否正确:SAL与SHL运算结果相同。