判断题
'Letter of credit' is often shortened as L/C or L.C. and is sometimes referred to as 'banker's commercial letter of credit', 'banker's credit', 'commercial credit' or simply 'credit'.()
正确
判断题 here are two types of business negotiations、formal and informal.()
判断题 ransportation insurance doesn't conform. to certain basic principles.()
判断题 无论是什么教学语法都应该是规范语法，即要有一个明确的标准，明确地告诉学生什么是正确的，什么是不正确的，什么是合乎语法的，什么是不合乎语法的。()
