哪兩個輪子的轉動方向是一致的'（很簡單，所以圖略）
8。這些筐架由鐵絲拉牢的方式不同,哪一種剛性最好?（很簡單，所以圖略）
9。判定圖中關閉那個龍頭來阻值水流出來。（很簡單，所以圖略）
Match the following designations with their functions:
cts and breaks as quick as possible abnormal currents exceeding 10 in ()
tely makes or breaks an on-load circuit ()
cts current increase up to 10in and stops the starter before the temperture rise of the motor and conductor deteriorates the insulating materials ()
A. swiching
B. protection against shotr-circuits
C. isolation
D. protection against overloads
第三部分 英語寫作
"if world without Communication Engineers"