选取切片可以用下列哪个工具:() ["切片选取工具","直接选取工具","移动工具","选择工具"]
BJ007对含有易燃、易爆介质容器的清洗置换,不能用的置换介质为()。 ["加水排气","惰性气体","氢气","吹扫蒸气"]
已知[X]补=00000000,则真值X=()。 ["+1","0","—1","以上都不对"]
切片的形状可以是:() ["矩形","圆形","多边不规则形","菱形"]
在Fireworks中新建和打开一个文档,会创建一个什么格式的文档() ["gif","png","psd","tif"]
路测的分类有那几种?