皮皮学，免费搜题
登录
搜题
【简答题】
调速阀是由 阀和 阀 联组成的。 阀的进出口的压力差是由 阀保证而基本不变化一的，使其流量不受负载变化的影响。一般情况下，对于调速阀其 必须大于一定值（5×105Pa或10×105Pa），才能正常工作。（减压阀；节流阀；串；节流阀；减压阀；进出口）
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】We regret ( ) entertain your order for our glass beaded bags as we are in short supply at present.
A.
not able to
B.
are unable to
C.
cannot
D.
our inability to
【简答题】In order to acquaint you with our business lines, we enclose a copy of our latest catalogue and pricelist covering the goods available for export at present.
【单选题】We regret____ entertain your order for our Green Beans as we are in short supply at present.
A.
not able to
B.
are unable to
C.
cannot
D.
our inability to
【简答题】Our multimillion nerve-cell central nervous system has its roots in the scattered nerve cells of tiny,lowly organisms that live in water half a billion years ago. Nerve cells evidently first appeared ...
【单选题】We regret ____ entertain your order for our glass beaded bags as we are in short supply at present.
A.
our inability to
B.
not able to
C.
cannot
D.
are unable to
【简答题】鲁迅唯一的一篇以青年爱情为题材的小说是《》。
【简答题】Our multimillion nerve-cell central nervous system has its roots in the scattered nerve cells of tiny, lowly organisms that live in water half a billion years ago. Nerve cells evidently first appeared...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
