【单选题】对于比例控制器来说,常用比例度来表示比例控制作用的强弱,比例度越大,控制作用(),余差越大。
【判断题】控制器的比例度越小,则放大系数越大,比例控制作用就越强。
【单选题】Jean Grace came to the shop to buy a Christmas present _________.
A.
for her mother because the latter cared for her quite a lot
B.
for her sister because the latter cared for her quite a lot
C.
for herself because the necklace was very beautiful
D.
for one of her family members because it was a custom
【简答题】比例度表示比例作用的强弱,δ越大,比例控制作用 ;δ越小,比例控制作用 。