船舱破损前,舱内东西密度越大,则该船舱的渗透率()
A.越大
B.越小
C.不变
D.不定
参考答案:A
试述老年性白内障的分类和治疗。
Questions
Jane finally decided to apply for her present job because ______.
A. she thought she had better qualifications than othersB. her husband had persuaded her toC. it was very well paid