90°偏切镗刀可以(),特别适合于铸铁工件的精加工。
A.镗通孔
B.镗盲孔
C.铣削
D.镗削平面
E.镗削沟槽
F.镗削成形面
参考答案:A, B, C, D
____ from the past performance, he is not likely to do very well in the contest. [ ]
A. Judged
B. Judging
C. Considered
D. Considering
时间可选在春、秋季,地点应选在阴凉处,避免暴晒的是()。
A.复制
B.发芽
C.发酵
D.蒸
E.煮