【单选题】Magnetic particle inspection is a means for detecting discontinuities at or near the surface in_______materials?
【单选题】A recently published systematic review nicely summarizes that:
A.
the huge variety of bonding methods used on dental oxide ceramics and their results in laboratory bond strength testing.
B.
published clinical trials on bonded oxide ceramic restorations and correlate their results with that of laboratory bond strength testing use the same bonding methods as in the clinical trials.
C.
23 different surface treatments that had been tested still with a wide variation of specific conditions.
D.
the vast amount of laboratory research it really is still a significant problem in dentistry to bond reliably to oxide ceramics such as alumina and zirconia ceramics.
【简答题】已知三相电机的两相电压 V, V,则其电源的相序为 。
【单选题】Incease the surface roughness of ceramic speciment, the bend strength will ( ).
C.
be increased first then reduced
【简答题】韵母是一个音节中____后边的部分,普通话中有____个韵母。
【多选题】what kinds of surface are there on the floor?
【简答题】The ceramic suce must have a degree of roughness . (词义反说)