涂布不透明层瓷时，如基底冠有缩孔可导致
A．嵌体B．半冠C．烤瓷熔附金属全冠D．桩冠E．3/4冠
参考答案：A
College students want to find jobs ________ they can receive not only good pay but also a sense of satisfaction.
A．that
B．in that
C．where
D．from it
已知方程x3+2x2-5x-6=0的根为x1=-1，x2，x3，则=（）。
A.A
B.B
C.C
D.D
E.E
=（）。