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自然 國中

求解第75題

4 器正負兩極維持恆定電壓 以策安全。 下列何者正確? 冷氣機的電源線必須與活線和中性線連接(C)電費是計算家中用電的總電 量(B)三孔插座必定是220V,除了冷氣機外,不可使用 (D)1度電可使50瓦特的燈泡連續使用20小時。 20X0.5=1 0.05 共300W,還有1000W的電熱水器一臺,若這些電器正在使用,彬彬想用電暖器取 20A,否則易發生危險,若彬彬家中電器有110W的冰箱一臺,彩色 TV 及照明燈具 暖,已知電暖器有兩個檔位L:700W及H:1000W,如果你是彬彬,應打開電暖器 哪一檔才會安全? 70 (A)L:700W(B)H:1000W (C)兩檔都安全 (D)兩檔都不安全,最好不要開電暖器了。 A+ A+ 3.7A+9=12.7A 375.在某建築工地上的照明電路需要用一條很長的導線由電源接到工地 使用,如果在工地使用一只標示220V、100W的燈泡 L來照明, 發現燈泡亮度比正常時暗一些,如右圖,經測量發現燈泡的電功率 只有81W,則導線上消耗電功率為多少? (A)4.5W(B)9W (C)18W (D)27W。 100-IX220 00 江地 。 。 電源220V 76.冷氣機的插頭是三孔,拔去接地線柱後,剩下兩根火線柱的插頭,插於220V 的插圖 上,會發生何種現象? (A)冷氣機正常運轉且很安全(B)冷氣機無法運轉 A (C)要變回110V才可使用(D)冷氣機正常運轉,但漏電時易發生危險。 _77.晨晨利用110V的電源接上一條安全負載電流為12A的延長線,線上接有552 扇、13.752的電鍋、112的吹風機各一臺。若他要在安全的情況下使用,則原

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英文 國中

請問第二題和第三題,這邊先說聲謝謝😌

finishes sa as Career Day h different ay hel 2 B A A: Thanks for A move > My sister is good at W dancing 動名詞當句子的主 d 句子的主詞不一定總是人或事物 「動名詞」的形式呈現。以動名 (1)以單一動名詞當主詞時, 1 Eating break B2 Playing c (2)如果句子的主 例:Wipin A D 92 actory armers Odrivers d-reporter's here is To be D It can be Stella (C) plan with give up 的答案(每週3分,共18分) for a Truck Driver riving experience ours, five days a week enough to move heavy things around over 20 years old Call Mr. Lee at 936-277-1460. Do you like people! Are you a people person? We're You can be a successful salesman like us! looking for people like you. Come join us at Flying Wheels! like talking to people have passion for cars can start working at any time No work experience is needed! (II Check us out at www.flyingwheels.com! 1. What is a people person like? d experience 經驗 passion 熱忱 (A) He or she has no work experience. over 超過 (B) He or she knows a lot about selling things. needed 被需要的 (C) He or she hates working with a lot of people. (D) He or she enjoys meeting and talking to people. 2. Ann called Mr. Lee last week. He wanted her to start working next Monday. Which may be true (F9) (A) She has no work experience, but she can fix cars. w thei difficult. I have m my day comes t phone c importa Before worke lot. Th Tony my ha sell th My f com plac give Ruth cou A 1. Betty likes (B) She may have a lot of driving experience, and she's good at it. on to be Kan old us to USKE 20G COC peop her. (A) J 2. WE (A) (B B 3. MOGLO UPP COMP Review Test 2 (Unit 八年級 英語(三) 7 部分 基礎題 仔細做,易得分

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