【简答题】What was the man doing last night?
【多选题】在遇限削弱积分PID控制算法中,当计算u(k)时,下面哪个做法是准确的。
A.
先判断u(k)是否已超出控制量的限制范围,若u(k) ≥ umax ,则只累加负偏差
B.
先判断u(k)是否已超出控制量的限制范围,若u(k) ≤ umin ,则只累加正偏差
C.
先判断u(k-1)是否已超出控制量的限制范围,若u(k) ≥ umax ,则只累加负偏差
D.
先判断u(k-1)是否已超出控制量的限制范围,若u(k) ≤ umin ,则只累加正偏差
【判断题】企业的定价目标取决于企业经营的总体目标。()
【简答题】1 had a__________(发烧) last night.
【单选题】Believe it or not, he came _______.
【单选题】—How did you sleep last night? — Oh, I slept like a log last night. What does the underlined part mean?
【简答题】对划线部分提问。 1. Lily played the guitar last night. ______ ______ Lily ______ last night? 2. They went to Shanghai last week. ______ ______ they ______ last week? 3. My weekend was very great . ______ ____...