27、下圖之展開圖為

(A)
(B)
(C)
(D)

28、左圖鉚釘符號表示(A)現場鑽鉚釘孔，現場鉚接，直孔(B)現場鑽鉚釘孔，現場鉚接，兩邊錐坑孔(C)工廠鑽鉚釘孔，現場鉚接，直孔(D)工廠鑽鉚釘孔，現場鉚接，兩邊錐坑孔

29、下圖 ab 線段穿越哪幾個象限 (A)Ⅰ、Ⅱ、Ⅲ(B)Ⅱ、Ⅰ、Ⅳ(C)Ⅰ、Ⅳ、Ⅲ(D)Ⅱ、Ⅲ、Ⅳ

30、徑向滾柱軸承 N320，下列敘述何者錯誤(A)軸承系號為 N3(B)尺度系號為 03(C)標稱號碼為 320(D)內環內徑為 100 mm

1. A fossil fuel is best described as (A)a flammable solid or gas. (B)a fuel that contains carbon. (C)a flammable substance formed from ancient biological material. (D)fossilized rock that will burn in a power station.

2. An example of a non-renewable, non-fossil energy resource is (A)oil. (B)coal. (C)tidal. (D)uranium.

3. Which of the following is not a renewable energy source? (A)biomass (B)natural gas (C)solar (D)wind

4. Which of the following is a greenhouse gas? (A)helium (B)nitrogen (C)methane (D)oxygen

5. The enhanced greenhouse effect is due to (A)increased trapping of infrared radiation emitted from the Earth's surface and oceans. (B)decreased trapping of infrared radiation emitted from the Earth's surface and oceans. (C)increased trapping of visible and ultraviolet radiation emitted from the Earth's surface and oceans. (D)decreased trapping of visible and ultraviolet radiation emitted from the Earth's surface and oceans.

6. The mass of carbon dioxide in gigatonnes emitted into the atmosphere globally in the year 2000 was approximately (A)2 (B)8 (C)15 (D)30

7. The projected percentage increase in atmospheric carbon dioxide between the years 2000 and 2100 is approximately (A)60 (B)100 (C)200 (D)550

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