角膜异物的主要表现为()。
A.无明显不适
B.结膜下出血
C.明显的刺激症状
D.前房出血
E.分泌物增多
参考答案:C
解析:角膜异物的主要表现为明显的刺激症状。
For Wang Shun,________ university graduate from China's less developed Guizhou Province,shopping online is ________ delight as she tries to keep pace with the lives of those in big cities.
A.the;a
B.a;不填
C.an;a
D.a;a
圆盘给料机按其传动机构是否封闭,可分为哪两种形式?各有何特点?