The Urgency Signal（）indicates that the station calling has a very urgent message to transmit concerning the safety of a ship or aircraft，or of some person on board or within sight.

A common rail engine has only one or two high pressure pumps in operation at the same（）time, and the injection into each cylinder.

读网络教育学院非英语专业和非艺术类专业专升本的学生报考统考，除计算机应用基础外，还需报考（）

Project（71）is an uncertain event or condition that，if it occurs，has a positive or a negative effect on at least one project objective，such as time，cost，scope，or quality．

● Project（71）is an uncertain event or condition that, if it occurs, has a positive or a negative effect on at least one project objective, such as time, cost, scope, or quality.（71）

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

Each cover consists of two or （）panels.

Each （）consists of two or more panels.

Once vessel has been cleared by Port Health or Immigration （）must proceed to appropriate berth or anchorage．

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

She is very nice, but because she has a（）way of speaking, she is slow in making friends

The girl is not happy at the new school. She has           friends there.