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【单选题】
心电图上代表心房去极化的波形是A.
P波
B.
QRS波
C.
T波
D.
U波
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【多选题】关于物业管理计划的说法，正确的是( )。
A.
物业管理中短期计划通常以物业服务企业与业主签订的物业服务合同约定的合同有效期为周期
B.
物业管理长期计划通常以物业的剩余使用寿命为限
C.
编制物业管理长期计划时，应进行物业全寿命周期的成本费用分析
D.
物业管理计划由业主委员会编制
E.
物业管理计划包括年度计划、中短期计划和长期计划
【单选题】Toughened hiring standards have not been the primary cause of the present staffing shortage in public schools. The shortage of teachers is primarily caused by the fact that in recent years teachers ha...
A.
Many teachers already in the profession would not have been hired under the new hiring standards.
B.
Today more teachers are entering the profession with a higher educational level than in the past.
C.
Some teachers have cited higher standards for hiring as a reason for the current staffing shortage.
D.
Many teachers have cited low pay and lack of professional freedom as reasons for their leaving the profession.
E.
Many prospective teachers have cited the new hiring standards as a reason for not entering the profession.
【单选题】Obtaining enough food is the first concern for every nation；in some countries food shortages have become a serious problem．
A.
生产足够的粮食是各国的首要国策；有些国家已面临粮食减产这一重大问题。
B.
能否获得充足的粮食关系到每个国家的生存；有些国家粮食短缺的问题日趋严重。
C.
获得足够的粮食是所有国家的头等大事；粮食短缺已成为一些国家的严重问题。
D.
首先每个国家对生产足够的粮食都会关心；有些则已经解决了粮食短缺的重大问题。
【单选题】The All Risks in PICC Ocean Marine Cargo Clauses does not cover the risks of ( )
A.
shortage
B.
rain damage
C.
import duty
D.
taint of odour
【简答题】According to some scientists,______is the single greatest cause of the fresh water shortage in the world.
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