井口BOP下的钻井四通各有两个阀门，一个是手动阀门，平时保持常开；一个是（）阀门，保持关闭。
参考答案：液动
用所给单词的适当形式填空。
1. My English teacher often wears _____ (glass).
2. I always _____ (meet) John on my way home. I usually stop _____
(have)a walk with him
3. Kate sings very well. She _____ (want) to be a _____ (music).
4. What _____ the singer _____ (look) like?
5. The old tree is 16 meters in _____ ( high).
个体工商户将货币资金存人商业银行的存款不是单位存款（）
