屋面板3突出梁边缘的尺寸为()
A. 975mm
B. 1000mm
C. 1100mm
D. 1200mm
There are ____ principles and requirements we should follow by doing mechanical practice.
A. 5
B. 6
C. 7
D. 8
It is believed that substitution drills that involve changes in forms are not more effective than those in which students simply replace the target part with another word.
A. 对
B. 错
Imitation, repetition and memorization can work seperately ,but we can not integrate them into an activity.
A. 对
B. 错