临床上所用的制作金属基底冠的贵金属材料是
A.银钯合金B.金铂合金C.金铜合金D.镍铬合金E.钴铬合金
参考答案:B
What's the temperature today? It's _____ 5℃ _____ 12℃. [ ]
A. both; and
B. from; and
C. from; to
D. both; to
斩剁面层中,在常温下抹好后()天成剁。
A.1—2
B.2—3
C.3—4
D.4—5