下列关于玻璃离子粘固剂的描述哪一项是不正确的?()
A.对牙髓刺激性小
B.封闭性能好
C.可释放氟
D.可用于乳牙各类洞修复
E.耐磨性好
参考答案:E
—Paul invited us to go on a trip to Jiming Temple tomorrow.
—______? Have the Flowering Cherries(樱花) on each side of the roads come out?
A.Why not?
B.What for?
C.What time?
D.Who else?
行走装置电动机功率为()kW,驱动轮数8个.