【单选题】关于宪法,以下理解错误的是( )
A.
作为职校生,应该认真学宪法,深入领会宪法精神
【单选题】William Byrd composed many pieces of music, but his Latin church music is considered his most ____work.
【单选题】William Byrd composed many pieces of music, but his Latin church music is considered his most ________ work.
【多选题】简单控制系统中,选择被控变量的原则有
A.
尽量采用直接指标作为被控变量。当无法获得直接指标信号,或其测量和变送信号滞后很大时,可选择与直接指标有单值对应关系的间接指标作为被控变量。
B.
被控变量应能被测量出来,并具有足够大的灵敏度。
D.
被控变量在工艺操作过程中经常要受到一些干扰影响而变化。为维持其恒定,需要较频繁的调节。
E.
选择被控变量时,必须考虑工艺合理性和国外仪表产品现状。
F.
被控变量应能代表一定的工艺操作指标或能反映工艺操作状态,一般是工艺过程中较重要的变量。
【单选题】William Byrd composed many pieces of music, but his Latin Church music is considered his most work.
【单选题】关于宪法,以下理解错误的是
A.
作为职校生,应认真学习宪法,深入领会宪法精神
【判断题】串级控制系统中主变量的选择和简单控制系统中被控变量的选择原则是一样的。
【单选题】William Byrd composed many pieces of music, but his Latin church music is considered his most __work.