用夹具装夹加工出来的零件。其位置精度比按划线找所达到的精度()
A、高
B、低
C、相同
参考答案:A
—Harbin is really a beautiful city and there're many places of interest.
—Yes, why not stay there for ______two days? [ ]
A. other
B. others
C. another
D. the other
击实试验试样制备干法和湿法两种,两种制样所得击实结果应该______。
A.相同 B.干法ρdmax不小于湿法ρdmaxC.干法ρdmax不大于湿法ρdmax D.不一定