[多选题]控制煤矿生产性噪声的技术措施有( )。
A.吸声技术
B.隔声技术
C.消声技术
D.隔振与阻尼

{{B}}The American Family{{/B}}
We’ll learn the American families from the following
five aspects:
{{B}}1. Family structures{{/B}}
1) Immediate family, consisting of parents
and children
2) (1) ______ family—consisting of parents, (1) ______
children, uncles, cousins, grandparents, etc.
{{B}}2. The emphasis on individual freedom{{/B}}
The primary propose of a family is to (2) ______ (2) ______
the happiness of individual members. Family name and
honor are (3) ______ important. (3) ______
{{B}}3. The role of the child{{/B}}
Emphasis on the individual may affect children in
two ways:
—Children nay get more attention and more power;
—Children may not get enough attention due to
the fact that both parents are (4) ______. (4) ______
{{B}}4. (5) ______ in the family{{/B}}