【評論主題】9. 柴油機活塞行程為2500 mm,氣缸直徑為720 mm,若該引擎之轉速為80 rpm,求其活塞平均運動速率(m/sec)?(A) 4.85(B) 5.76(C) 6.67(D) 8.21
【評論內容】80x2.5x2/60=6.63
【評論主題】21. RLC串聯電路,若電阻R=10Ω、感抗XL=20Ω、容抗XC=10Ω,試求電路之功率因數為?(A) 0.333(B) 0.5(C) 0.707(D) 0.866
【評論內容】cos(45)=0.707
【評論主題】9. 柴油機活塞行程為2500 mm,氣缸直徑為720 mm,若該引擎之轉速為80 rpm,求其活塞平均運動速率(m/sec)?(A) 4.85(B) 5.76(C) 6.67(D) 8.21
【評論內容】80x2.5x2/60=6.63
【評論主題】21. RLC串聯電路,若電阻R=10Ω、感抗XL=20Ω、容抗XC=10Ω,試求電路之功率因數為?(A) 0.333(B) 0.5(C) 0.707(D) 0.866
【評論內容】cos(45)=0.707
【評論主題】【題組】5.196 □ 3 2036(A)>(B)<(C)=
【評論內容】共同乘以36-->11.....觀★★★★★,...
【評論主題】2. 一萬個一萬是多少?(A)100 萬 (B)10 萬 (C)1000 萬 (D)1 億
【評論內容】10000 x 1000.....觀看完★★★,...
【評論主題】【題組】34.Which is Not true about Mrs. Brown?(A)She is a teacher.(B)She is tall and young.(C)She is at
【評論內容】
Emma: Is she thirty years old? Ivy: No. She’s twenty-five. She’s young
她只有25歲
【評論主題】26.It’s two to two. =______.(A)2:02 (B) 3:02 (C) 1:02 (D)1:58
【評論內容】It’s two to two ★ &☆☆☆;☆☆...