May I have a ________ of milk? [ ]
A. glass
B. cup
C. pair
答案:A
重沸器壳程一般走热流介质。()
多根牙诸牙根之间的牙槽骨为
A.牙槽骨B.牙槽窝C.牙槽嵴D.牙槽间隔E.牙根间隔