() my delight, our school football team won the game easily.
A. In
B. Of
C. To
D. For
理想气体的条件之一是假设气体分子之间不发生相互作用。
A. 正确
B. 错误
() driving to work, Mr. Lead usually goes to his office downtown by train.
A. Without
B. Instead of
C. In case of
D. In spite of
同步型交流伺服电动机由变频电源供电时,可方便地获得与频率成正比的可变转速。
A. 正确
B. 错误