瓶装气是使用液化石油气()向单个用户供应液化石油气。 ["瓶组","撬装设备","瓶","罐组"]
The velocity of the wind,its steady direction,and the amount of time it has blown determines a wind driven current’s(). ["temperature","density","deflection","speed"]
《隋炀帝艳史》属于哪一类作品()。 ["野史","历史演义小说","人情小说","人物传记"]
液化石油气的供应方式主要有瓶装气和()。 ["管道液化气","撬装气","储气井气","罐装气"]
330型密接式车钩内部由钩舌、()、()、解钩装置等构成。车钩有待连挂位和全开位两种状态。
企业可以考虑的目标市场模式中一般采用哪几种模式?