第16题:[单选题]The speed here is not to exceed 5 knots A.You shall proceed at a speed of 5 knots B.You shall proceed at a speed of more than 5 knots C.You shall proceedataspeedoflessthan5knots D.You shall proceed at a speed of at least 5 knots 参考答案:A 未提供答案,自行解答