Is that seat taken?()
A、Please don't worry.
B、I don't think so.
C、Why not?
D、It's very nice.
A、Please don't worry.
B、I don't think so.
C、Why not?
D、It's very nice.
A、We haven‘t booked the dishes. B、We haven‘t ordered the dishes. C、Yeah. I‘m saving these seats for friends. D、Yeah. I‘m stuffed.
A、are seated with seat belts on and doors shut B、are seated with seat belts on and doors open C、are to shift to one side to right it D、escape from the craft
A、Flows of fluids can be restricted by both cocks and valves B、There are seats in the internal passages of valves C、A disc of valve only moves up and down D、We can infer that there is a bore in cock ping
A、The profile of the valve is like a globe B、The valve seat is set into the bulbous body C、The plug or disc of the valve is made vertical to the axis of the pipe D、The valve seat is located at right side of the plug or disc
A、radio communications that are available B、maximum speed of your vessel C、temperature D、current