从年龄段上看，学前教育包括（ ）两个阶段。

学前儿童指（）的儿童，这一年龄阶段的儿童称为（）。

可以在（）阶段采用Make-or-buy决策分析。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

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.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

1904年1月，清政府颁发《奏定学堂章程》，规定学前教育机构为（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

学前儿童心理发展各年龄阶段的主要特征