皮皮学，免费搜题
登录
搜题
【判断题】
设定变频器的启动频率 P13=20HZ. 上限频率P1=50HZ. 下限频率P2=10HZ;运行频率为10HZ时,电机按照20HZ运行。A.
正确
B.
错误
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
【简答题】变量如何分类？
【单选题】On which of the following occasions will writing be the most difficult?
A.
When writers have a free choice of subject.
B.
When writers are writing something their readers know.
C.
When writers are doing a writing assignment.
D.
When writers are presenting a comparison.
【判断题】() 全画幅数码单反相机是指感光原件 c in 〇 s 相对应传统 35 im ) 胶片尺寸而言的,与胶片 尺寸相同大小的即为全画幅数码单反相机。
A.
正确
B.
错误
【单选题】When writing complex graphs, which statement is correct?
A.
the structure of writing the complex graphs is completely different with others task 1 writing structures
B.
The overview can be written at the second paragraph or at the last paragraph
C.
When writing the complax graphs, you have to write the connections between two different types of graphs.
D.
When writing the complax graphs, you have to write at least 3 paragraphs of details.
【单选题】When __________ the model writing our teacher shows on the screen, my writing needs to be improved a lot. [ ]
A.
comparing to
B.
compared with
C.
comparing with
D.
to compare
【判断题】When writing a commercial advertisement, you should include specific details.()
A.
正确
B.
错误
【单选题】It was when Asimov was eleven years old ________ his talent ________ writing became obvious.
A.
when; for
B.
that; on
C.
that; for
D.
/; on
相关题目：
参考解析：
知识点：
题目纠错 0
发布
