下列“抗菌药物联合应用的指征”中，最正确的是A．单一病原菌感染B．需要长程治疗的局部

以下关于核磁共振说法正确的是()

A．在MRI中使用较多的是90°、180°RF，在梯度回波脉冲序列是90°的RF

B．RF越强，持续时间越长，RF停止后，M离开其平衡状态越远

C．M变化的程度取决于施加的RF强度和时间

D．射频脉冲(RF)激励质子群，质子的宏观M不再与Bo平行

E．以上均对

Many animals engage in play，but homo sapiens is the only animal (1) have invented sports.Since sports are an invention，a part of culture (2) than an aspect of nature，all definitions of sports are somewhat arbitrary. (3) sports are a human universal found in every known culture or a (4) unique to modern society depends upon one’s definition of sports.Men and (5) have always run，jumped，climbed，lifted，thrown， and wrestled，but they have (6) always performed these physical activities competitively. Although all literate societies seem to (7) contests of one sort or another in which men， and sometimes women， (8) in displays and tests of physical skill and prowess，sports may be (9) defined as physical contests performed for their own sake and not for (10) ulterior end.According to this strict definition，neither Neolithic hunters nor contestants (11) religious ceremonies such as the ancient Olympic Games were engaged in sports. (12) on the stipulation that sports must be performed for their own sake (13) the paradoxical elimination of many activities which are usually thought of as (14) ，such as exercises done for the sake of cardiovascular fitness，races run (15) satisfy a physical education requirement，ball games played to earn a paycheck. (16) definition also means abandonment of the traditional usage in which"sport，"derived (17) Middle English disporter，refers to any light hearted recreational activity.In the. (18) of some 18th- century aristocrats，a game of backgammon and the seduction of (19) milkmaid were both considered good sport，but this usage of the term (20) become archaic.

经审核有误的银行汇票，代理付款行应拒绝受理并出具拒绝受理通知书，（）。

A、将银行汇票退回签发行

B、将银行汇票退交出票人

C、将银行汇票暂时留存

D、将银行汇票退交持票人

猪肝舌

自制原始凭证按其填制手续不同，可分为（）。

A.一次凭证

B.累计凭证

C.汇总原始凭证

D.记帐编制凭证

E.科目汇总表