水泥工业常用的气力输送设备有()和管道式气力输送设备。
参考答案:空气输送斜槽
The professor suggested that the students ________ into four groups in the experiment. [ ]
A. be divided
B. must divided
C. might divided
D. should divided
望舌以辨别疾病虚实属性,主要观察()。
A.舌质的老嫩
B.舌体的肥瘦
C.舌苔的厚薄
D.舌质的颜色
E.舌苔的润燥