经过烘干处理的木材,应()保管
A、堆码室外
B、放进仓库
C、放入密闭隔离房间
D、以上均可
参考答案:B
选择句子补全对话。(10分)
A: 1 ( ) . Can you tell me the way to the Children’s Hospital, please?
B:Sure. 2 ( ) and turn right between Book Store and Library.
The white building is the Children’s Hospital. 3 ( )
A: 4 ( ) . By the way, 5 ( ) .
B:About half an hour.
A:OK. Good-bye.
常温下有体积为V1L,pH为m的稀硫酸和体积为V2L,pH为n的NaOH溶液混合后.
(1)如果V1=V2:
①当m+n=13时,则混合后溶液呈______性
②当m+n=15时,则混合后溶液呈______性
(2)如果混合后pH=7:
①当m+n=14时,则V1:V2=______
②当m+n=13时,则V1:V2=______
③当m+n>14时,则V1:V2=______(填表达式),且V1______V2(填“>”“<”或“=”)