甘草解毒机制为()对毒物有吸附作用 ["A、甘草苷","B、甘草苷元","C、甘草甜素","D、甘草酸","E、异甘草酸"]
我们通常说的“抑硫浮铜”中硫指的是()。 ["A、单质硫","B、硫化铜","C、黄铁矿","D、磁黄铁矿"]
飞锤离心力与弹簧力()将使调速器系统摆动。 ["A、平衡","B、不平衡"]
偏斜拉伸的加载速度上限说法正确的是() ["A、小于30MPa/s","B、0~50%最大力小于60MPa/s,50~100%最大力小于30MPa/s","C、小于60MPa/s","D、0~50%最大力小于30MPa/s,50~100%最大力小于60MPa/s"]
可能引起浮选机电机发热、相电流增高的原因有()。 ["A、槽内沉积粗砂过多","B、轴承损坏","C、电机单相运转","D、盖板或给矿管松脱"]
湿困脾阳