An airport is a transportation center used for the landing and _______ of aircraft, and it provides transportation both for people and freight. A: taking off B: taken off C: takeoff D: take off

30. If the cause of severe list or trim is off-center ballast，counterflooding into empty tanks will ___.

If your vessel has a list to port due to negative GM and off-center weight, the first corrective measure you should take is to______

Whichof the followings are considered the characteristics of London? A: The sports center B: The financial center C: The business center D: The cultural center

How much off was the dress the author found? A: 15% off B: 30% off C: 50% off D: 25% off

Two men took the parcel off the plane. They ______ . A: took off it B: it took off C: took off D: took it off

设置表格在页面上居中显示的属性是（）。 A: <;tablevalign=”center”>; B: <;tralign=”center”>; C: <;tablealign=”center”>; D: <;tdalign=”center”>;

The sports meeting ____. A: put off B: is put off C: is to put off D: is putted off

启动时点火开关拨动顺序为( )档→( )档→( )档;重新打启动档时,点火开关必须从( )开始。 A: OFF;ON;ST;OFF; B: OFF;OFF;ON;ST; C: ST; OFF;ON; OFF; D: ON;OFF; ST;OFF;

Goods handling may account for only 50% of the direct labor cost in warehouse and 70% in( ). A: Sales center B: Distribution center (B) Stock center (D) Process center