半地下式配水机房配水机来水管路在()情况下最有可能形成正压管路。
A.清水池低水位运行
B.清水池高水位运行
C.清水池在平常运行水位
D.清水池在放空池时
参考答案:C
棉纱线按纺纱工艺流程不同可分为()。
A.混梳纱线
B.纯纺纱线
C.精梳纱线
D.混纺纱线
His wife is very ____about dress and she is strongly _wearing _____clothes on formal occasions. [ ]
A. special; against; informal
B. particular; opposed to; casual
C. especial; against; casual
D. strict; opposed to; usual