【简答题】Para. 3 4. What did the examples of Albert Einstein and Thomas Edison illustrate? 该题只填第二空 ______________,________________, ________________ can not inhibit a strong spirit committed to success.
【单选题】光焦度 ()表示光学系统对入射光束起到会聚作用。
【判断题】常用的电极材料有黄铜、钢、石墨、铸铁、银钨合金、铜钨合金等。
【简答题】Para. 3 4. What did the examples of Albert Einstein and Thomas Edison illustrate? 该题只填第三空 ______________,________________, ________________ can not inhibit a strong spirit committed to success.
【判断题】保养即将到期时,打开点火开关,仪表一定显示保养提示信息。
【单选题】利率对储蓄的收入效应表明,人们在利率水平提高时,可能()