题目内容

在阀门型号中“Q”代表球阀。

A. 正确
B. 错误

查看答案

搜索结果不匹配？点我反馈

更多问题

简述改良土路拌法填筑施工工艺。

根据自然条件和耕作制度特点，我国小麦栽培大致划分为哪三类地区？

Each drilling unit equipped with helicopter fuel storage tanks must have the tanks installed as far as practicable from the（）.

A. landing area and sources of vapor ignition
B. main deck
C. engine room
D. drill floor

转任具有哪些特点？