促使炉料下降的是重力，炉料在静止时重量系数比炉料运动时大。
参考答案：错
医疗用品消毒灭菌的特点是什么？
For COAPAS-SARSAT system,（）process the distress signal from EPIRB to determine its position and identity.
A.COSPAS-SARSAT
B.ground receiving stations
C.spacecraft
D.satellite SAR instrument
