建设项目竣工环境保护验收时,高速公路噪声监测应在声屏障保护的敏感建筑物外( )处布设观测点位,进行声屏障的降噪效果测量。
A.1m
B.1.5m
C.2m
D.3m
参考答案:A
How many do you have?[ ]
A. shirt
B. shirtes
C. shirts
It is not easy to learn English well but if you ________,you will succeed in the end.[ ]
A. hang up
B. hang about
C. hang on
D. hang onto