How should signal flares be used after you have abandoned ship and are adrift in a liferaft?（）.

A . 1/6 B . 1/4 C . 1/3 D . 1/2

A . horizontally and directly abeam of your vessel B . at the vessel whose attention you want to attract C . into the wind D . at greater than 60 degrees above the horizo

A . Place both fists in front of the body with the thumbs pointing outward each other B . Clasp hands in front of your body C . Extend arm with the palm down and and hold this position rigidly D . Extend arm with the thumb pointing up, and flex the finger s in and out

A . Extend arm with the palm down and and hold this position rigidly B . Place both fists in front of the body with the thumbs pointing outward each other C . Clasp hands in front of you body D . Extend arm with the thumb pointing up, and flex the finger s in and out for as long as the load movement is desired

A . Extend arm and point finger in the direction to move the boom B . Extend arm with the thumb pointing downward and flex fingers in and out C . With f rearm vertical and forefinger pointing up,move hand in small horizond circles D . With arm extended downwards and forefinger pointing down,move hand in small horizontal circle

A . poor B . bad C . fair D . good

A . green B . red C . white D . yellow

A . 24 months B . 36 months C . 42 months D . 54 month

A . always B . never C . sonetimes D . sometime

A . straight overhead B . at the vessel whose attention you are trying to get C . into the wind D . about 60 degrees above the horizo

A . Extend arm with the thumb pointing up and flex the fingers in and out B . Place both fists in front of the body with the thumbs pointing upward C . With forearm vertical and forefinger pointing up,move hand in small horizond circles D . Extend arm with the fingers closed and thumb upward

A . Starting with a dash and extending radially outward from the target B . As a broken line from center of PPI to the target C . Starting with a dot and extending radially inward from the target D . Starting with a dash and extending to the right of the target

A . Only when there is a chance of their being seen by rescue vessels B . At half-hour intervals C . At one-hour intervals D . Immediately upon abandoning the vessel

A . Opening and closing the throttle B . Rocking the wings C . Flashing the navigational lights off and on D . Flashing Morse T

A . Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signa B . Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desired C . First tap your elbow with one hand and then proceed to use regular signals D . First tap the top of your head with your fist and then proceed to use regular signal

A . With foremarm vertical and forefinfer pointing up ,move hand in small horizonal circles B . With arm ertended downwards and forefinger pointing down,move hand in small horizontal crecles C . Extend arm with fingers closed and thumb pointing upward D . Place both fists in front of the body with the thumbs pointing outward

A . 10 minutes B . 1 minute C . 1 hour D . 3 minute

A . Place both fists in front of the body with the thumbs pointing outward B . With both arms extended out and palms to down, move arms back and forth C . Extend arm with the palm down and and hold this position rigidly D . Clasp hands in front of you body

A . Immediately upon abandoning the vessel B . Only when there is a chance of their being seen by a rescue vessel C . At one hour intervals D . At half hour interval

A．how should we do B．what we should do C．what should we do

A.Place both fists in front of your body with thumbs pointing toward each other B.Clasp hands in front of your body C.Extend arm with the palm down and hold this position rigidly D.Extend arm with the thumb pointing up, and flex the fingers in and out

A.poor B.bad C.fair D.good

A．sensation B．sensory activation C．perception D．transduction