水平路面上有一个重500 N的小车,在100 N的水平拉力作用下,匀速向前移动了

题型:不定项选择

问题:

水平路面上有一个重500 N的小车,在100 N的水平拉力作用下,匀速向前移动了5 m,则在这一过程中[ ]

A.车受到的阻力为600 N

B.车受到的阻力为500 N

C.拉力对车做功是500 J

D.重力对车做功为2500 J

考点:
题型:不定项选择

患者,张某,男,肝硬化致门静脉高压症,分流手术前的护理哪项正确()。

A.鼓励体育锻炼

B.高蛋白,低脂饮食

C.注射维生素K

D.术日晨放置胃管

E.术前清洁灌肠

题型:不定项选择

男性,40岁。反复饥饿时中上腹部隐痛10年,伴反酸、嗳气,进食和服制酸剂可缓解,今晨中上腹剧痛后全腹疼痛持续存在。

该患者最可能患下列哪一种疾病()

A.急性胰腺炎

B.胰腺癌

C.胃癌

D.消化性溃疡

E.急性胆囊炎

题型:不定项选择

用所给词的适当形式填空(15分)

小题1:Let’s have a party to welcome the new members of the          (Student) Union.

小题2:How          (active) you are! You’d better take part in more after-school activities.

小题3:Tommy promised         (not be) late for class next time.

小题4:I felt much        (calm) after listening to the relaxing music.

小题5:Why not share your happiness and         (sad) with your close friends?

小题6:The old man had difficulty        (get) to the top of the mountain.

小题7:Very few people were found         (wake) when the earthquake happened last night.

小题8:Granny was too tired to reach           (four) floor of the building.

小题9:We never doubt that the new novel is worth        (read) for several times.

小题10:If the problem          (deal) with peacefully, the world will be more and more beautiful.

小题11:—Sandy          (suffer) from stress for a few weeks.    —Sorry to hear that.

小题12:It’s important for us to spend our time         (wise).

小题13:Among the four boys, Paul is            (suitable) for the job.

小题14:I often tell my students not to keep worries to       (they).

小题15:        (practice) hard, and you will be sure to win the competition.

题型:不定项选择

氯胺酮最不宜用于高血压病人及颅内高压病人。

题型:不定项选择

设有员工实体Employee(employeeID,name,sex,age,tel,department),其中employeeID为员工号,name为员工姓名,sex为员工性别,age为员工年龄,tel为员工电话(要求记录该员工的手机号码和办公室电话),departID为员工所在部门号(要求参照另一部门实体Department的主码departID)。
Employee实体中存在的派生属性及其原因是 (58) :对Employee实体中属性departmentID的约束是 (59)

A.name,原因是会存在同名员

B.age,原因是可以用另一个属性birth替换age并可计算age

C.tel,原因是员工有多个电话

D.departID,原因是实体Department已有departID

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