题目内容
(请给出正确答案)
[单选题]
They are going to hold a party ____ September 1st.
A.at
B.in
C.on
D.from
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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)