下列有关渠堤裂缝灌浆的说法不正确的是()。
A、浆料选择“粉黏结合”
B、孔序布置“先密后疏”
C、浆液浓度“先稀后浓”
D、灌浆次数“少灌多复”
参考答案:B
I'm __________ tired, because I have __________ homework.[ ]
A. too much, too many
B. much too, too much
C. much too, too many
D. too many, too much
带前馈的PID属于()
A、常规PV算法点;
B、逻辑点;
C、数字组合点;
D、常规控制点。