![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
They are going to hold a party ____ September 1st.
A.at
B.in
C.on
D.from
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.at
B.in
C.on
D.from
A.Better cell HO
B.Emergency HO
C.Low battery HO
D.Power budget HO
A.Ho≥0.35m
B.Ho≥0.40m
C.Ho≥0.45m
D.Ho≥0.50m
A.0.6Ho(Ho为平均开采深度)
B.0.7Ho(Ho为平均开采深度)
C.0.8Ho(Ho为平均开采深度)
D.0.9Ho(Ho为平均开采深度)