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17.M8 × 1.25與M10 × 1.5兩螺紋相同之處為(A)牙深 (B)節距 (C)牙角 (D)節徑。
問題詳情
17.M8 × 1.25與M10 × 1.5兩螺紋相同之處為
(A)牙深
(B)節距
(C)牙角
(D)節徑。
參考答案
上一篇 :
18.自軸線的一端來看,依順時針方向旋轉,外螺紋向前行進,此螺紋稱為(A)右螺紋 (B)複螺紋 (C)單螺紋 (D)左螺紋。
下一篇 :
19.一雙線螺紋之螺旋起重機,節距為5mm,作用臂長20cm,若摩擦損失為50%,則需施力若干方能舉起3140N之重物?(A)50N (B)63N (C)75N (D)200N。
資訊推薦
【題組】2. ( ) Brian and Cathy like to dance.
20.相鄰兩螺旋之對應點,在平行軸上之距離,稱為(A)導程 (B)螺距 (C)節徑 (D)徑節。.
【題組】3. ( ) Cathy doesn’t know(不知道) about(關於) the library in the school.
21.下述螺紋中,效率最高,可傳達較大的動力為(A)愛克姆螺紋 (B)惠氏螺紋 (C)圓螺紋 (D)方螺紋。
【題組】4. ( ) Cathy and Brian aren’t students.
22.若僅施力50kg,欲將250kg的重物利用斜面推上貨車,已知貨車高度為1.25公尺,若不計算摩擦,則斜面需多長?(A)6.25 (B)5.75 (C)4.75 (D)3.75。 .
31.如圖所示,B 、C 、D 、E 四齒輪組成一周轉輪系, B為100齒, C為50齒, D為80齒, E為20齒, 輪軸固定,若 B依順時針方向迴轉6次, D依反時針方向迴轉9次,求E 之迴轉次數
4. Not only Chinese but also English is difficult to learn.(A) Chinese is more difficult than Englis
2. I have been working in the office for three hours. It’s three o’clock in the afternoon now.(A) I
6. 選出正確的句子(A) He’s never been there, is he?(B) There is a little bread on the kitchen table, is ther
7. I should have studied math hard yesterday. (選出句意相同者)(A) I should study math hard yesterday.(B) I
10.請選出不正確的句子:(A) There goes Frank. (B) In the classroom is thirty hard-working students .(C) Here sh
3. We will go by ourselves if John _____ tomorrow.(A) doesn’t come (B) won’t come (C) didn’t come (D
12. ( )John: Paul is a good student, isn’t he? Jack: _____________.(A) Yes, he isn’t a good student.
14.選出錯誤的句子:(A) Dolphins can do different tricks with a ball.(B) Tom went out with 3 credit cards.(C)
15. 選出錯誤的句子:(A) Tom feels watching TV is boring, but Mary thinks it’s interested. (B) Does the fair
三、克漏字選擇:(每個答案 2 分,共 10 分)1. We are going to graduate from junior high .We were really happy ___1.___
5. It _____ more than two months since the school began. ( 複選 )(A) is (B) was (C) has been (D) had
8. A: I have got the news. B: When _______ the news?(A) did you get (B) will you get (C) have you go
9. ______ the dog, John jumped into the river without thinking.(A) Save (B) To saving (C) In saving
11. ( )The number of workers in the city _______ about ten thousand. (A) is (B) are (C) has (D) have
【題組】2. Some people go to fortune-tellers to ______.(A) find out who they will marry(B) play cards wi
四、閱讀測驗:(每題答案 2 分,共 10 分)1. Every country has fortune-tellers, people who say that they can see into
13.Her grandfather _____ for five years.(A) has died (B) was dead (C) died (D) has been dead
【題組】3. In this reading, which is NOT used to tell a person’s fortune?(A) A book. (B) A ball. (C) A c