皮皮学，免费搜题
登录
搜题
【简答题】
变量叶片泵依靠 的变化,来改变泵的流量;柱塞泵是 ,使密封容积变化,来实现 。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】To prepare for a trip abroad, you need to consider what things to take and what things to do. Which of the following tools can help you be better organized?
A.
a mind map
B.
a google map
C.
a passport
D.
a visa
【单选题】To prepare for a trip abroad, you need to consider what things to take and what things to do. ________ can be a big help for your planning.
A.
A google map
B.
An electronic map
C.
A mind map
D.
A Baidu map
【单选题】What are two things that can help customers control their purchases?
A.
a budget and a list
B.
articles and studies from consumer magazines
C.
family meetings and a scheduled time to shop
【单选题】糖酵解时,提供高能磷酸键使ADP磷酸化生成ATP的代谢产物是
A.
3-磷酸甘油醛和F-6-P
B.
1,3-二磷酸甘油酸和磷酸烯醇式丙酮酸
C.
3-磷酸甘油酸和G-6-P
D.
1,6-二磷酸果糖和1,3-二磷酸甘油酸
E.
磷酸烯醇式丙酮酸和2,3-二磷酸甘油
相关题目：