99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

<dd id="dmcpv"><dfn id="dmcpv"><thead id="dmcpv"></thead></dfn></dd>

單項(xiàng)選擇題

The firing of a red star signal may mean（）.

A.This is the best place to land
B.You are seen - assistance will be given as soon as possible
C.Tail block is made fast
D.Slack away

你可能感興趣的試題

單項(xiàng)選擇題

The Coordinator Surface Search in a SAR situation should display by day（）.

A.the code flags FR
B.a black ball over a black diamond shape
C.code flag Quebec over a black ball
D.two black diamond shapes in a vertical line

單項(xiàng)選擇題

Some sea water came into the wheel house during the voyage due to（）the window thereof.

A.not close
B.not closing
C.we didn't close
D.not to be closed

<dl id="dbe1q"><strong id="dbe1q"><input id="dbe1q"></input></strong></dl>