编研成品的审校由()人员进行。
A.参加编研
B.专业部门
C.有关业务
D.上级领导
参考答案:A, B, C
Sometimes we can see more than 60 students are ________ in a small school bus, which can easily cause traffic accidents.
A.packed
B.combined
C.directed
D.involved
沿过渡表面度量的切削层尺寸称为()。
A、切削深度
B、切削宽度
C、切削厚度