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【判断题】
pH值小于7的水溶液显酸性，所以溶液中没有OH-存在。A.
正确
B.
错误
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举一反三
【单选题】The GMDSS defines four sea area based on the（）.
A.
location and capacity of the facilities located on board ships
B.
Position and type of a sincre sintion
C.
Capacity and location of shore based communication facilities
D.
Position and capacity of mobile communication stations
【单选题】The GMDSS defines four sea area based on the（）.
A.
location and capacity of the facilities located on board ships
B.
Position and type of a sincere sintion
C.
Capacity and location of shore based communication facilities
D.
Position and capacity of mobile communication stations
【单选题】The GMDSS defines four sea areas based on the ______
A.
areas in which the ship operates
B.
capacity and limitation of shore-based communication facilities
C.
position and capacity of mobile communication stations
D.
location and capacity of the facilitieis located on board ships
【单选题】The GMDSS defines four sea areas based on the()
A.
Iocation and capacity of the facilities located on board ships
B.
position and capacity of mobile communication stations
C.
capacity and Iimitation of shore-based commumcation facilities
D.
areas in which the ship operates
【单选题】The GMDSS defines four sea area based on the___
A.
location and capacity of the facilities located on board ships
B.
Position and capacity of mobile communication stations
C.
Capacity and location of shore based communication facilities
D.
Position and type of a sincre sintion
【单选题】The GMDSS defines four sea area based on the ______ .
A.
location and capacity of the facilities located on board ships
B.
Position and type of a sincere sintion
C.
Capacity and location of shore based communication facilities
D.
Position and capacity of mobile communication stations.
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