单选题关于单气路控制式气缸启动阀特点的论述正确的是()。 Ⅰ.开、关迅速 Ⅱ.启动空气耗量多 Ⅲ.能兼顾启动和制动两方面要求 Ⅳ.结构简单 Ⅴ.采用平衡式启动阀 Ⅵ.启阀活塞为分级式活塞AⅠ+Ⅱ+ⅢBⅠ+Ⅲ+ⅤCⅡ+Ⅲ+ⅥDⅠ+Ⅳ+Ⅴ
单选题
关于单气路控制式气缸启动阀特点的论述正确的是()。 Ⅰ.开、关迅速 Ⅱ.启动空气耗量多 Ⅲ.能兼顾启动和制动两方面要求 Ⅳ.结构简单 Ⅴ.采用平衡式启动阀 Ⅵ.启阀活塞为分级式活塞
A
Ⅰ+Ⅱ+Ⅲ
B
Ⅰ+Ⅲ+Ⅴ
C
Ⅱ+Ⅲ+Ⅵ
D
Ⅰ+Ⅳ+Ⅴ
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