問題詳情
27. I told you not to leave your toys lying_______ the living room. They just make a big messfor me to clean up.
(A) through
(B) at
(C) on
(D) around
(A) through
(B) at
(C) on
(D) around
參考答案
無參考答案
內容推薦
- Because Sam wanted to show off his new car, he drove so fast _________ he bumped intoother cars.
- I’m still hungry. Mom, may I have _____rice and fried chicken?(A) more (B) little (C) much (D) b
- The only ______for membership is driver’s license.(A) precedent (B) priority (C) prejudice (D) p
- Parents should ______a desire to learn for their children.(A) cultivate (B) plant (C) plow (D) e
- After many years of hard work, he finally got his idea_______.(A) off the ground (B) in a minute
- Sue’s pen pals didn’t write for a long time. She has not ______ them since last May.(A) listenin
- The doctor forgot which part of the drawers he put the files, so he had to _______ all thedrawer
- Close to the finish line, Jeff got a(n)_____of energy and ended up finishing first.(A) raise (B)
- All the fish died because the river was_______ by the large chemical company.(A) comprised (B) r
- I usually ______ the nice weather by going swimming or hiking the trails in Yangmingshan.(A) run
內容推薦
- A proton moves around a circular path (radius = 0 mm) in a uniform 0.25 T magnetic field. What
- A 0 kΩ resistor and an initially uncharged 0 μF capacitor are connected in series to a 12 V
- A 3 μF capacitor is connected in series with a 6 μF capacitor. When a 300 V potential difference
- 如下圖所示之桁架,求桿件 CE 之軸力為何? (A) 6 kN (壓力) (B) 6 kN (拉力)(C) 8 kN (壓力) (D) 8 kN (拉力)
- A current loop freely rotates in a uniform magnetic field (B = 0.50 T). The maximum torque on th
- 一滑車作直線運動,在時間 t=0 s 時的速度為 5 m/s,方向向東;t=5 s 時的速度為 10 m/s,方向向西,則此滑車在 t=0~5 s 期間的平均加速度為下列何者?(A) 1 m/
- 如下圖所示之桁架,受外力 P 作用,其內力為零的桿件共有幾根? (A) 5(B) 4(C) 3(D) 0
- 有關材料之冷加工與熱加工,其分界溫度為何?(A)回復溫度 (B)淬火溫度 (C)再結晶溫度 (D)晶粒成長溫度
- 金屬材料在冷加工時,隨著加工程度的增加,會產生材料強度增加的現象,下列何者符合上述說明?(A)細晶強化 (B)應變強化 (C)固熔強化 (D)析出強化
- 洛氏硬度試驗中,有關洛氏B級(HRB)之敘述,下列何者正確?(A)施加負荷為60 kg (B)施加負荷為150 kg(C)壓痕器為鑽石圓錐 (D)壓痕器為1/16英吋鋼珠
- 一標距內截面為25 cm2之鋁合金拉伸試棒,經拉伸破斷後,量取破斷面截面積為15 cm2,試問該鋁合金的斷面收縮率為多少%?(A)20(B)40(C)60 (D) 80
- 在拉伸試驗中,使材料呈現永久變形所需之最小應力為何?(A)潛變強度 (B)抗拉強度 (C)疲勞強度 (D)降伏強度
- 下列何種反應屬於共晶反應?(式中L為液體,α、β、γ分別為固熔體)(A) L→α+β (B) L+α→β (C) γ→α+β (D) γ+α→β
- 硫在鋼中屬有害元素,會降低鋼的韌性,下列何種元素最可降低由硫引起的熱脆性?(A)錳 (B)碳 (C)矽 (D)磷
- 矩形斷面梁,已知梁內最大剪力為 V,其最大橫向剪應力發生在矩形斷面之何處?(A)上邊緣 (B)下邊緣 (C)中立軸 (D) 4 個角隅處
- 雪明碳鐵在常溫時具有磁性,但隨溫度上升,其磁性會慢慢減少,溫度上升至210 oC便失去磁性,此變態為何?(A) A0 變態 (B) A1 變態 (C) A2 變態 (D) A3 變態
- 工程應用上,鋼的含碳量約為多少%?(A) 0.02以下 (B) 0.02 ~ 2 (C) 2 ~ 4 (D) 4 ~ 6
- 恆溫變態曲線圖之縱軸與橫軸分別代表何者?(A)溫度與組成 (B)溫度與時間 (C)溫度與變態速率 (D)溫度與變態百分率
- 碳鋼中的含碳量愈低,其S曲線將如何移動?(A)愈向上移 (B)愈向下移 (C)愈向左移 (D)愈向右移
- A magnetic field is directed out of the page. Two charged particles enter from the top and take
- 碳鋼常用之熱處理,下列敘述何者有誤?(A)正常化是指材料加熱後在空氣中冷卻,可使結晶組織細緻(B)淬火是將材料加熱後在油中急冷,而得到雪明散鐵組織使之硬化(C)當鋼在爐中冷卻時,其組織為粗波來
- 金屬材料於製程中,使用熱處理的最主要目的為何?(A)結合材料 (B)改變材料的形狀(C)改善產品的表面粗糙度 (D)改變材料的機械性質
- 有關18-8不銹鋼之敘述,下列何者有誤?(A)常溫下沒有磁性 (B)常溫下為沃斯田鐵組織(C) Ni含量約為18 % (D)典型的為SUS304不銹鋼
- 高速鋼中6-6-4-2型之鉬系高速鋼,其主要元素成分與含量比率與下列何者最接近?(A)含鎢6 %、鉬6 %、釩4 %、鎳2 % (B)含釩6 %、鉻6 %、鈷4 %、鎢2 %(C)含鉻6 %、
- 在鐵碳平衡圖中,共晶點之含碳量約為多少%?(A) 0.8 (B) 0 (C) 3 (D) 7