结核菌素试验结果（＋＋＋）是指局部（　　）。

结核菌素试验结果（＋＋＋）是指局部皮肤硬结变化为（）

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。

患儿男，3岁。因1个月来咳嗽偶有低热，做结核菌素试验PPD5U，48～72小时检查皮肤红肿硬结直径20mm，判断其结果是（）。

患儿男，3岁。因1个月来咳嗽偶有低热，做结核菌素试验PPD5U，48～72小时检查皮肤红肿硬结直径20mm，判断其结果是

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

患儿，4岁。其母患浸润性肺结核，该患儿近半个月低热，咳嗽，疑为结核病，做OT试验：1：2000，其硬结直径为21mm，结果为（）