A.dustB.sea waterC.land sandD.wind（）will reduce the vis……

单项选择题（）view of the fact，I wish to submit this report.

A.In
B.On
C.To
D.For

单项选择题（）using the derrick at once，the gooseneck is bent.

A.Continue
B.Start
C.Commence
D.Stop

单项选择题（）this the Chief Officer agreed not to put any remarks.

A.At
B.By
C.For
D.Upon

单项选择题（）there danger of explosion?

A.Is
B.Has
C.If
D.Do

单项选择题（）the whole the stowage is all right.

A.In
B.On
C.From
D.To