砌体结构中，关于预制钢筋混凝土板的支承长度说法正确的是（）

口服补液及时纠正脱水，应用ORS，说法正确的是（）

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.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

根据抗震要求，钢筋砼结构中的砌体填充墙的砌体的砂浆强度等级不应低于（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

以下关于砌体结构的4种观点：Ⅰ．钢筋混凝土构造柱组合墙的构造柱间距不宜大于4m；Ⅱ．组合砖墙砌体结构房屋，有组合墙楼层处的钢筋混凝土圈梁高度不宜小于180mm；Ⅲ．抗震设防时钢筋混凝土构造柱组合墙中部构造柱的纵向钢筋配筋率不应小于0.6％；Ⅳ．网状配筋砖砌体所用的砂浆强度等级不应低于M5。试问，针对上述观点正确性的判断，下列何项正确？（　　）