采用()镗孔,可以获得较高的孔位精度,但镗削前必须进行孔位坐标计算。
A.试切法
B.镗模法
C.划线法
D.坐标法
参考答案:D
—Lisa, do you remember ________ yesterday?
—Of course.
A.what did the teacher say
B.what the teacher said
C.what will the teacher say
D.what the teacher will say
低渗性缺水时,在血清钠尚未明显降低之前,尿钠含量
A.正常
B.略高
C.逐渐升高
D.时高时低
E.减少