单项选择题
Which of the following is not a form of precipitation?()
A.rain B.frost C.sleet D.snow
单项选择题 Waves formed by the wind blowing far away are known as().
单项选择题 If the moisture content of the cargo sample is()the Transportable Moisture Limit,then the cargo should be safe to load.
单项选择题 The amount and accuracy of the information provided on the different charts()considerably.