眼球中,透明的结构是 [ ]
A.角膜、晶状体、视网膜
B.角膜、玻璃体、视网膜
C.虹膜、脉络膜、巩膜
D.角膜、晶状体、玻璃体
答案:D
Her mother doesn't of her going to study in the USA alone. [ ]
A. admit
B. agree
C. prove
D. approve
桶身高度变化后试漏机应()
A、不必试漏
B、调整设备确保试漏
C、加高托盘
D、购置试漏机