mc不能支持的音频格式有()
A.AAC-LD
B.G.728
C.G.711μ
D.AEC
参考答案:A, B, D
Despite repeated ______ by educational authorities for concrete measures to reduce students' burdens, little has changed.
A.directions
B.recommendations
C.advice
D.calls
弹性套柱销联轴器安装两轴线倾斜度允许偏差为()。
A、10/1000
B、0.6/1000
C、0.4/1000
D、0.2/1000