电分段处于小半径曲线区段时,应注意测量()。
参考答案:跨中拉出值
当四台水泵运行时,最好的调速组合为( )。
A.全部为调速泵
B.三定一调
C.二定二调
D.一定三调
My last lesson in French! I hardly know how to write, _______ I would never learn now .
A.but
B.and
C.if
D.so