Which one of the following statements is TRUE about the author?(5.0)
A. The author was an all-around student good at both liberal and science subjects.
B. The author enjoyed the little privilege of being a prefect.
C. The author had never shown any interest in an all-girl schools.
D. The author regretted not making many friends in schools.
查看答案
The author's school performance was basically ________.(5.0)
A. successful
B. joyful
C. stressful
D. tasteful
输送单元中共用了( )个磁性开关。
A. 5
B. 6
C. 7
D. 8
输送单元中用了()个气动执行元件。
A. 1
B. 2
C. 3
D. 4
在输送单元用于检测气缸活塞杆位置的传感器为磁性开关。()
A. 对
B. 错