某物体在第一分钟、第二分钟内共前进了260m,第三分钟静止不动,第四分钟前进了1

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问题:

某物体在第一分钟、第二分钟内共前进了260m,第三分钟静止不动,第四分钟前进了100m,则它在4min内的平均速度为(  )

A.1.2m/s

B.1.3m/s

C.1.5m/s

D.2m/s

考点:变速运动
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The ABC Bank Irrevocable documentary credit Number: LC123-258866 Date: August 24,1999 Date and place of expiry : October 30, 1999 China Advising bank: Bank of China Beneficiary: China XYZ import and export corp. Applicant: UVW corporation. Amount: USD52,500 (Say U.S Dollars fifty two thousand five hundred only) We hereby issue irrevocable documentary credit which is available with: Any bank By negotiation of beneficiary’s drafts at sight For full invoice value Drawn on the ABC bank Partial shipments: Not allowed Transshipment: Not allowed Shipment from: Shanghai To: Tokyo Japan At the latest: October 15, 1999 Following documents required: +Signed commercial invoice in three copies +Full set of clean on board ocean bill of lading +Weight certificate in two copies Covering: 100 metric tons (5PCT MOL) of XY chemical in drums at USD 500 per M/T. Special instructions: Insurance to be effected by buyer. Instructions to advising bank: Please advise this credit to the beneficiary We hereby undertake that drawers, endorsers in compliance with the terms of this credit will be duly honored upon presentation to the drawee bank. Authorized signature 一、根据上述信用证,回答下列问题

装运港

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患者男,40岁,因“情绪低落、坐立不安、躯体不适、睡眠差反复发作10余年,加重伴消极想法2周入院”,曾单用帕罗西汀40mg/d和文拉法辛150mg/d各2个月余,疗效不佳,下一步治疗方案可考虑()

A.合并丙戊酸钠

B.合并单胺氧化酶抑制剂

C.合并米氮平

D.合并丁螺环酮

E.合并非典型抗精神病药

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妊娠期血液系统的变化正确的是

A.网织红细胞轻度下降
B.白细胞的增加到妊娠晚期达高峰
C.红细胞沉降率减少
D.血小板明显增加
E.血浆纤维蛋白原增加

题型:选择题

行政合法性原则,是指行政管理权的存在与行使必须( )、

A.依据宪法,符合宪法,不得与宪法相抵触

B.依据法规,符合法规,不得与法规相抵触

C.依据规章,符合规章,不得与规章相抵触

D.据法律,符合法律,不得与法律相抵触

题型:选择题

下列关于水上作业正确的安全要求有()

A.遇雨、雾、霾等能见度不良天气时,工程船舶和施工区域应显示规定的信号

B.遇大风天气,船舶应按规定及时进避风锚地或港池

C.靠泊船舶上下人或两船间倒运货物,应搭设跳板、扶手及安全网

D.交通船舶必须配有救生设备,载人超过乘员定额时应报告

E.定位船及抛锚作业船,作业人员应在锚链、锚缆滚滑区域指挥

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