38.The ship has a speed of more than 14 ______ at 120 ______.
A.Miles, r.m.p
B.Miles, r.p.m.
C.Knots, r.p.m.
D.Knots, r.m.p.
正确答案是C
38.The ship has a speed of more than 14 ______ at 120 ______.
A.Miles, r.m.p
B.Miles, r.p.m.
C.Knots, r.p.m.
D.Knots, r.m.p.
正确答案是C