喷码机喷字浓度太重或喷出的字颠倒如何处理?
参考答案:
(1)用调节阀调节气源压力,降低压力,可减轻喷字浓度。(2)将喷码机喷头旋转180度,纠正喷字方向。
__________ has already been pointed out, grammar is not a set of dead rules.[ ]
A. As
B. It
C. That
D. Which
捣固作业应该注意哪些事项?