A.can be absorbed through the skin
B.causes irreversible damage to eye tissue
C.is a very unstable product
D.All of the above
您可能感興趣的試卷
你可能感興趣的試題
A.dump valve
B.deflector
C.separator
D.diverter
A.poor fix
B.good fix
C.poor signal quality
D.good signal quality
A.on an even keel
B.listing about 1° to the side the light is displayed on
C.listing over 5° With the light displayed on the high side
D.listing，and the chutes should be directed to the side where the light is displayed
A.two red lights
B.one green light
C.one white light
D.one amber light
A.circle of equal altitude
B.parallel of declination
C.parallel of altitude
D.vertical circle
最新試題
The light vessel is reported（）.
After jacking down your liftboat you have an unexpected list.You find that the only cause of this list must be a flooded leg.Your next course of action should be to（）.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
The latest known details of lights are given in（）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
Light Lists for coastal waters are（）.
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
The Lists of Meteorological Observation Stations can be found in（）.