电缆经管子和管道中安装的穿管系数,标准范围是≤40%。
参考答案:对
国家发展和改革委员会是工程咨询单位( )的行政管理部门。
A.业务管理 B.资格认定 C.业务审核 D.资格评定
—What's Kate doing?
—______. [ ]
A. She plays the guitar after school
B. She likes watching TV
C. She is a student
D. She is talking with Sally