进度款的支付比例按照合同约定,按期中结算价款总额计,不低于(),不高于()。
A.50%;80%
B.60%;85%
C.50%;90%
D.60%;90%
参考答案:D
堤平面与上唇下缘的关系是()
A.唇上2mm
B.与唇平齐
C.唇下2mm
D.唇下3mm
E.唇下4mm
These eggs were found in the Gobi Desert by a group of scientists .[ ]
A. in the 1920
B. in the 1920s
C. in 1920s
D. in 1920s'