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【单选题】
H2受体阻断药，对下列何种病疗效最好：A.
胃溃疡
B.
十二指肠溃疡
C.
结肠溃疡
D.
口腔溃疡
E.
胃酸分泌过多的其他疾病
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反馈参考答案：
举一反三
【简答题】把 JK 触发器转换为 触发器的方法是 ( 1 ) 。
【单选题】___________ is the difference between the value of the goods and services that a country exports and the value of the goods and services that it imports.
A.
Trade balance
B.
Trade surplus
C.
Trade deficit
D.
Trade barrier
【简答题】英文:The services that a freight forwarder renders may often range from routine and basic tasks such as the booking of space or customs clearance to a comprehensive package of services covering the tota...
【简答题】关于检验的时间和地点的规定，一般有（）、（）、（）三种做法
【简答题】• Originally, a(1)_ _ was a commission agent performing routine tasks on behalf of the exporter or importer such as loading or unloading of goods, (2)_ _, arranging loacal transport,(3)_ for his custo...
【单选题】( ) is the difference between the values of the goods and services that a country exports and the value of the goods and services that it imports.
A.
Trade balance
B.
Trade surplus
C.
Trade deficit
D.
Trade barrier
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