已达到粉碎要求的粉末能及时排出().
A.开路粉碎
B.闭塞粉碎
C.干法粉碎
D.循环粉碎
E.自由粉碎
参考答案:E
Hainan is a very large island. It's the second ________ island in China. [ ]
A. large
B. most large
C. larger
D. largest
眼压测量值受何种误差因素影响最重要()
A.巩膜厚度
B.角膜中央厚度
C.角膜周边厚度
D.前房深度
E.角膜曲率