对常用的单列向心球轴承来说,原始径向游隙一般为()mm。
A.0~0.02
B.0.01~0.04
C.0.08~0.12
D.0.20~0.30
参考答案:B
For breakfast he only drinks juice from fresh fruit _____ on his own farm.[ ]
A. grown
B. being grown
C. to be grown
D. to grow
开挖深基坑时,如果分层设置多级平台,每层平台宽度不宜小于()米。
A.3
B.10
C.1.5
D.5