患者纳少,腹胀脘痛隐隐,喜温喜按,大便稀溏,口淡不渴,舌淡胖,苔白润,脉沉迟无力,宜诊为()
A. 脾气虚证
B. 胃气虚证
C. 胃阳虚证
D. 脾阳虚证
E. 脾虚气陷证
Pitting in the area close to the pitch line and on the same end of each gear tooth of a reduction gear unit would be caused by ()
A. corrosion on the gears
B. excessive gear speed
C. dirt in the oil
D. misalignment of the gear
壳牌在气化炉压力升压至1MPa时投煤,是建立一定的压力后投料,炉压波动小吗?为什么选1MPa这个点?