问题
单项选择题
The COSPAS-SARSAT system can provide distress alerts to the appropriate authorities（）.
A.anywhere in the world
B.at sea
C.in the air
D.ashore
答案
参考答案：A
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The COSPAS-SARSAT system can provide distress alerts to the appropriate authorities（）.
A.anywhere in the world
B.at sea
C.in the air
D.ashore
参考答案：A