全身强壮要穴是 A．地仓 B．颊车 C．丰隆 D．内庭 E．足三里

充填中产生气泡较大，为圆形，多在基托腭侧最厚处的内层，其原因是 （）

A.填塞不足

B.热处理过快

C.填塞过早

D.单体过多或单体调拌不匀

E.材料本身原因

United Nations urged the country to give up the nuclear plan       stability and peace.

A．in exchange for

B．in bid for

C．in terms of

D．in search of

----_____has been designed to enable children and young people to act safely on roads?

----Programmes and resources in the theme “Road Safety”.

A．Why is it that

B．What is it that

C．What is that

D．Is it what

设有如下关系表______。

则下列操作中，正确的是______。

A．T=R∩S

B．T=R∪S

C．T=RхS

D．T=R/S

亚硝酸盐、亚氯酸盐等遇到氯酸盐、硝酸盐等氧化剂会引起着火或爆炸。（）