牙周袋冲洗()
A.Ca(OH)2
B.MTA
C.EDTA
D.3%H2O2+0.9%NaOH
E.0.5%~5.25%NaClO+3%H2O2
参考答案:D
What we want is an environmentally friendly car, especially ____ is good on gas.
A.one
B.one which
C.which
D.one that
目前,先进制造业出现的五种技术趋势(即五化)是哪些?