流速仪是各类别水文站必须配置的流量测验仪器设备,按要求,每一个大河重要控制站需配置()流速仪。
A.3~5架
B.4~6架
C.3~8架
D.5~10架
参考答案:D
简述企业经营实力分析的内容。
75% of the students ______that the number of private cars _______ increasing rapidly.
A.agree; are
B.agrees; is
C.agrees; are
D.agree; is