光缆在光配架上方需盘绕一至二周，约余留（）后，进入OBB。
A.5-9米
B.6-10米
C.7-11米
D.8-12米
参考答案：D
-Kitty, will you go to see Spider-Man 3 with us this evening?
-Sorry, I __________ the film already.[ ]
A. saw
B. have seen
C. had seen
D. see
窝沟封闭是指（）。
A．简单备洞，进行银汞充填
B．去除龋坏牙质，进行粘固粉充填
C．去除龋坏牙质，进行丁香油一氧化锌暂封
D．去除龋坏牙质，进行粘结性树脂充填
E．不去除咬面牙质，涂布一层粘结性树脂
面牙质，涂布一层粘结性树脂