【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。
【单选题】下面选项中,是基于Chrome V8引擎的JavaScript运行环境,它可以让JavaScript运行在服务器端的是()。
【判断题】当听到小儿哭声,我们首先应该排除小儿是否是生理性哭闹
【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 。