3 OR 4．WINTRY SHOWERS．MAINLY GOOD．MODERATE ICING IN WEST AT FIRST WITH TEMPERATURE -2℃ TO -5℃．IN SOUTH WESTERLY 6 TO GALE 8，LOCALLY SEVERE GALE 9，BACKING SOUTHERLY AND INCREASING LOCALLY STORM 10 LATER．WINTRY SHOWERS THEN SNOW．MAINLY GOOD BECOMING MODERATE．

[89].Backing means the wind _______．

A．is changing clockwise in direction

B．is changing anticlockwise in direction

C．is changing cyclonically or variably in direction

D．remains unchanged in direction at the time

[90].The visibility in EAST NORTHERN section is mainly _______．

A．poor B．moderate

C．GOOD D．very GOOD

[91].In north part of WEST NORTHERN section，the wind is _______．

A．cyclonic 6 to gale 8 at first B．cyclonic 4 at first

C．westly 6 to gale 8 D．variable 3 or 4 at first

[92].This passage is likely to be under the heading of ________．

A．FORECAST B．GALE WARNING

C．SYNOPSIS D．STORM WARNING

二

The Chief Officer，or First Mate as he is often called，is the Master's chief officer and head of the Deck Department．He is assisted by a Second Officer（Mate），a Third Officer（Mate），and sometimes a Fourth Officer（Mate）．Several companies employ a First Officer as well as a Chief Officer．The Deck Department also includes a Boatswain（Bosun）and a Carpenter，both petty officers，and a number of ratings．These made up of Able Seamen（AB），Ordinary Seamen（OS）and a middle grade known as Efficient Deck Hands（EDH）．There are other grades of seamen．On some ships Navigating Cadets are carried for training purposes．

The Chief Engineer is head of the Engine Department．He is assisted by a Second，Third，Fourth and sometimes Fifth Engineer．An Electrical Officer may also be carried．The engine room petty officers are the Storekeeper and Donkeyman．On tankers there is also a Pumpman．He is also a petty officer．The engine room ratings are Firemen and Greasers．There may also be Engineer Cadets．

The Catering Department is under the Chief Steward．It is divided into a saloon and galley

section．The former is headed by the Second Steward，the latter by the Ship's Cook．They are both usually petty officers．They are assisted by several stewards and cooks，and by a number of junior ratings．

The Radio Department often consists of only one man：the Radio Officer．On ships where

continuous radio watches are kept there may be three radio officers：a Chief，Second and Third．

[93].________ is not a petty officer．

A．Boatswain B．Second Steward