下列方程为一元一次方程的是[ ]
A.xy=3
B.y=2-3y
C.x2=2x
D.x+2=3y
答案:B
—Did Mr White tell you _______?
—Yes. He said he went there in 2003. [ ]
A. when he traveled to Tibet
B. how he goes to Wuhan
C. where he spent his holidays
D. why did he visit Kunming
某办公楼外装门面的幕墙工程,1~4层有一幅石材幕墙800m2,一幅铝板幕墙1200m2,一幅全隐框全玻幕墙400m2,5层及以上四个立面各有一幅完全相同的明框玻璃幕墙,南北侧各为1400m2,东西侧各为920m2。该幕墙工程应划分为()个检验批。
A.7
B.9
C.10
D.11