6.指北針宜用細(xì)實(shí)線繪制，圓的直徑宜為(      )

A.10mm                                                       

B.12mm

C.14mm                                                       

D.24mm

7.需測堆積密度的材料是(      )

A.板狀材料                                                  

B.散粒材料

C.塊狀材料                                                  

D.管狀材料

8.比強(qiáng)度值高的材料屬于(      )

A.高強(qiáng)度材料                                               

B.抗壓性能好的材料

C.輕質(zhì)高強(qiáng)材料                                           

D.剛度大的材料

9.中空玻璃屬于(      )

A.普通玻璃                                                  

B.特種玻璃

C.有機(jī)玻璃                                                  

D.玻璃空心磚

10.蒸壓灰砂磚不能用于(      )

A.急冷急熱的部位                                        

B.防潮層以上

C.一般基礎(chǔ)                                                  

D.墻體結(jié)構(gòu)