题目内容

The earth is ______ the moon.

A. as 49 times big
B. 49 times as bigger as
C. 49 times as big as
D. as big as 49 times

查看答案

搜索结果不匹配？点我反馈

更多问题

一根输水混凝土管，管径DN1200，粗糙系数n1=0.015，输水量Q1=1.4m3/s，内壁经除垢并刷防水涂料后，粗糙系数n2=0.012，水力半径R及水力坡度i不变，则输水量Q2可增至 m3/s。

A. 1.4
B. 1.75
C. 2.19
D. 2.45

The ______ (cheap) bags are not usually the best ones.

Jane"s parents have four daughters, and she is the ______ (young) child.

某辐流沉淀池Qmax=7854m3/h，表面负荷为q=2m3/(m2·h)，水力停留时间t=1.5h，分为两座n=2，池子直径D和有效水深H分别为。

A. D=70m，H=4.5m
B. D=60m，H=4m
C. D=50m，H=3m
D=40m，H=2.5m