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【单选题】
收到船舶的DSC遇险呼叫后( )。A.
只有海岸台才能给予遇险报警的收妥确认
B.
船舶电台能立即用无线电话给予收妥确认
C.
只有在海岸台给予收妥确认后，船舶电台才能用无线电话给予收妥确认
D.
船舶电台只能进行DSC遇险报警转发
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【单选题】I like this 3G cellphone very much, but it costs almost _______that one.
A.
four times as many as
B.
as four times many as
C.
four times as much as
D.
as four times much as
【单选题】A commonly used rule of thumb is that it costs approximately ____ times as much to get a new customer as it does to keep an existing customer.
A.
three
B.
four
C.
five
D.
six
【单选题】I like this 5G cellphone very much, but it costs almost _______that one.
A.
four times as many as
B.
as four times many as
C.
four times as much as
D.
as four times much as
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