在都卜勒(Doppler Log)計程儀中，下列何者是超音波發射方向不與航速方向相垂直(即發射波束俯角不等於90°)的原因? (A)減少縱向搖擺誤差 (B)減少上下顛簸誤差 (C)方便於接收反射

問題詳情

2. 在都卜勒(Doppler Log)計程儀中，下列何者是超音波發射方向不與航速方向相垂直(即發射波束俯角不等於90°)的原因?
(A)減少縱向搖擺誤差
(B)減少上下顛簸誤差
(C)方便於接收反射回波
(D)垂直時都卜勒效應不顯著

參考答案

答案：D
難度：計算中-1
書單：沒有書單，新增

內容推薦

【題組】Coco bought a dress on Monday and got it on Saturday.How much did she spend?　(A) NT$950 (B) N
【題組】Which is NOT true?(A) Bangkok’s traffic isn’t always good. (B) People get on and off river ta
【題組】What does “up and down” mean?(A) In both ways. (B) At all times. (C) Around and around. (D) I
【題組】We are in front of the Fish Market. How can we get to the police station?(A)Drive past the mu
【題組】Where is the bank?(A)It’s on Fourth St. (B)It’s next to the park.(C)It’s on the corner. (D)It
【題組】(A) find our e-tickets (B) hear something (C) bring my money (D) spend so much time
【題組】(A) fly a plane (B) take a train (C) take a bus (D) take a taxi
【題組】(A) parking space (B) playground (C) google map (D) restaurant
【題組】(A) How soon will we get to the museum? (B) How often do you go to the museum?(C) How much wi
【題組】What does the sentence It’s a steal mean?(A) It’s cheap enough.(B) It’s too expensive.(

內容推薦