问题
单项选择题
化工生产中输送液体的设备种类很多，下列不属于按作用原理分类的是（）。
A、喷射泵
B、容积泵
C、叶片泵
D、流体作用泵
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
化工生产中输送液体的设备种类很多，下列不属于按作用原理分类的是（）。
A、喷射泵
B、容积泵
C、叶片泵
D、流体作用泵
参考答案：A
| 你会看日历吗？试着填一下吧！ | |
 | —What day is it? —It's ________． —How's the weather today? —It's ________. —What's the date? —It's ________ _________． |
 | —What day is it? —It's ________． —How's the weather today? —It's ________. —What's the date? —It's ________． |
 | —What day is it? —It's ________. . —How's the weather today? —It's ________. —What's the date? —It's ________. |
 | —What day is it? —It's ________. —How's the weather today? —It's ________. —What's the date? —It's ________. |
| —What day is today? —It's _________. —What's the date? —It's _________. |
