如果PCV阀在全开位置卡住,()。 ["发动机启动时不能着车","发动机暖机后怠速会过低","发动机会加速不良","以上都正确","以上都不正确"]
负密码子(paracodon)
Illustrator中3个曲线点最多可以形成()个弧。 ["4个","3个","2个","5个"]
下列选项中不一定属于导致大气污染的人为因素的是:(). ["工业废气","火山爆发","核爆炸","汽车尾气"]
在Photoshop中,选择下列哪个键加热键,可以转换为移动工具?() ["SHIFT","CTRL","ALT","SHIFT+ALT"]
正超螺旋(positive superhelix)