有患者角膜曲率读数为7.7@180,7.8@90,若选择软镜则最合适的基弧为()。
A.7.7
B.7.8
C.8.4
D.8.5
E.8.3
参考答案:D
It was lucky for him to be admitted _______the university he had longed for.
A.as
B.with
C.for
D.to
柴油机着火性通常用()表示。
A.十六烷值
B.温度
C.压缩比