题目内容
（请给出正确答案）
If zinc phosphate cement is contaminated by moisture during setting()
A．its solubility increases
B．its hardness increases
C．its pH increases
D．its fluoride release increases
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更多“If zinc phosphate cement is co…”相关的问题
A．spatulation time
B．liquid-powder ratio
C．temperature ofthe mixing slab
D．number and size ofpowder increments
A．the compressive strength of the cement is too low
B．cement interferes with the polymerization of the resin
C．zinc oxide and Bis-GMA form. a soluble compound
D．the cement increases the polymerization shrinkage of the resin
A.软切换比例过高，将占用过多的前向和反向CE资源，影响系统容量
B.更软切换比例过高，将占用过多的CE资源，影响系统容量
C.更软切换比例过高，将占用过多的Walsh资源，影响系统容量
D.软切换比例过高，将占用过多的基站功率资源
电路如图所示，其中Vcc=12V，Rb1=60KΩ，Rb2=20KΩ，Rc=6KΩ，Rs=200Ω，Re1=300Ω，Re2=2.7KΩ，RL=6KΩ，β=50，VBE=0.6V，电容C1，C2，Ce都足够大，电压放大倍数Av为()。
A.8.7
B.-8.7
C.-10
The use of DBA’s(dentin bonding agents)when dentin is exposed in a preparation prior to cementation of porcelain composite restorations()
A．increases bond strength
B．reduces microleakage
C．reduces post operative sensitivity
D．increases possibility of fracture of restoration
