因为教师介入儿童游戏具有重要作用，因此教师可随时介入儿童游戏。（）

教师加入幼儿正进行的游戏，并让幼儿掌握游戏的进程，这是哪种教师介入游戏的方式?（　）

教师加入幼儿正进行的游戏，并让幼儿掌握游戏的进程，这是哪种教师介入游戏的方式?()

教师以角色的身份参与游戏，以游戏情节需要的动作、语言来引导儿童游戏的发展。这属于（）介入策略。

从游戏与教学的关系来看，学前游戏可以分为本体性游戏和（）两类

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。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。