下列不属于氨碱法制纯碱所需的原料是( )
A.石灰石
B.氯化钠
C.氢氧化钠
D.水
答案:C
There are a number of methods to provide ___________ relief from your toothache pain, which can’t cure the problem.
A.permanent
B.temporary
C.contemporary
D.consequent
患者右下第一磨牙龋洞深,探底中硬不敏感,热测当时未引起疼痛,刺激去除后痛持续时间长,其原因是
A.牙髓坏死B.急性牙髓炎C.可复性牙髓炎D.慢性增生性牙髓炎E.慢性闭锁性牙髓炎