涂刷金属表面油漆时,在多层涂刷操作中,必须注意各层有必要的()时间,层间结合应严密,不得有分层现象。
A、涂刷
B、耐水
C、干燥
D、吸水
参考答案:C
()可作为软件生存期中各开发阶段的一个质量检查点。
A、配置项
B、程序
C、基线
D、过程
______superstitious beliesfs about the mandrake plant.
A.People have had long
B.Have people long had
C.People have long had
D.Long have had people