皮皮学，免费搜题
登录
搜题
【单选题】
在多普勒计程仪中，不使超声波发射方向与航速方向相垂直（即发射波束俯角≠90°）的原因是（）A.
垂直时不产生多普勒效应
B.
便于接收反射回波
C.
减少上下颠簸误差
D.
减少纵向摇摆误差
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】Chinese enterprise managers and business educators are now exploring the potential of the Global Management Challenge, a simulated business management competition.
A.
extracting
B.
exposing
C.
examining
D.
expanding
【简答题】请自主学习第一单元,完成下面任务: Read the text carefully and answer the following questions. How does the author classify thinking? Do you like this essay? Give one good reason no matter what your answer may be.
【判断题】The growth of Chinese students enrolment in business and engineering field has slowed.()
A.
正确
B.
错误
相关题目：
参考解析：
知识点：
题目纠错 0
发布
