哪个标示用于标志特定小区（）。
A.CGI
B.BSIC
C.LAI
参考答案：A
通风空调系统中金属风管的咬口连接适用于厚度小于或等于（）的薄钢板。
A.1mm
B.1.1mm
C.1.2mm
D.1.3mm
______ was developed in the late 19th century.
A. The Grammar-Translation Method B. The Direct Method C. The Oral Approach D. The Audiolingual Method
