砖砌体的质量通病有（）
A．砂浆强度偏低，不稳定
B．砌体组砌方法错误
C．灰缝不饱满
D．游丁走缝
参考答案：A, B, C, D
Without the new paints and the new technique, we would not be able to see the many great
masterpieces_______ this period is famous. [ ]
A. for whom
B. for that
C. for which
D. where
储蓄国债按计息方式，可分为（）两类付息方式
A.定期付息
B.按季付息
C.按年付息
D.利随本清
