____
For a ship not on an international voyage,an approved substitute for an impulse projected rocket-type line throwing appliance is a().
, ______.
For an OSV not on an international voyage,an approved substitute for an impulse projected type line throwing appliance is a().
If y = 4 and x = 3, then ______.
Which of the listed devices could be used as a substitute for a ring grooving tool?()
On a light tow,what could you substitute for a fishplate?()
Which of the listed devices could be used as a substitute for a ring grooving tool?()
, ______.
for x 5,f(-3)= ______.