问题
单项选择题
An instrument useful in predicting fog is the（）.
A.sling psychrometer
B.microbarograph
C.anemometer
D.aneroid barometer
答案
参考答案：A
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An instrument useful in predicting fog is the（）.
A.sling psychrometer
B.microbarograph
C.anemometer
D.aneroid barometer
参考答案：A