润叶的工艺任务是施加水份,并使叶片(叶尖)充分吸收。
参考答案:错
I’m afraid I’m not ________ to help with the talent show, for I am fully occupied with my own project.
A.reliable
B.convenient
C.available
D.accessible
轮胎起泡、油箱漏油、钢圈沙眼等问题要在旧件故障部位用什么作明显标记()
A、油漆
B、水性笔
C、记号笔