I am new here, so I have ________friends

患者女，19岁，学生，因“腹泻4d”于5月6日来诊。4d前开始腹泻，稀粪，色黄，2d后出现阵发性腹绞痛，继而腹泻加重，4~6次/d，伴发热、恶心、呕吐。查体：T38.4℃，P120次/min，R21次/min，BP90/60mmHg；面色潮红；腹部压痛，无反跳痛，肠鸣音亢进。

应进一步采取的措施是（）（提示：经治疗，第2天体温降至37.5℃，症状减轻。第3天体温恢复至36.4℃，排粪2次，稀粪。粪标本O157抗原胶体金方法检测阳性。）

A.立即上报疫情

B.粪培养分离大肠埃希菌O157：H7

C.进行隔离治疗

D.小剂量使用敏感抗生素

E.进行O157：H7毒素检测

F.症状缓解可出院随访

G.恢复后做肠镜检查

某元素原子最外层上只有两个电子，该元素

A．一定是金属元素           

B．一定是ⅡA族元素

C．一定是过渡元素 

Mr. Smith liked his job. He liked his town, and he didn’t like the idea of moving somewhere else, but his wife   51  telling him that his pay was not enough to   52     the needs of the family. That was why he was thinking of taking a new job in Boston,  53  he had been offered a job in a factory, and the pay was far   54 .

Henry Manley, boss of Mr. Smith, was the   55  of a small company   56 computers. The company was in   57  trouble, because among other reasons, the Japanese were selling such things at very   58  prices. As a result, Manley had to   59    his own price and profits (利益) as well, otherwise he would not   60  any orders at all. Even so, orders were   61  not coming in fast enough,   62  there was no money for raises for his workers. Somehow, he had to   63  along and keep his   64  workers as well. He sighed (叹气) .    65  then the telephone rang.

His secretary told him that Mr. Smith wanted to   66  him as soon as possible. Manley   67  again. He could   68  what it was about. Mr. Smith was a very young engineer. The company had no   69  unless it could attract men like him. Manley rubbed his forehead: his   70  seemed endless.

小题1:.

A．considered

B．advised

C．began

D．kept小题2:.

A．meet

B．imagine

C．bring

D．tell小题3:.

A．there

B．where

C．here

D．somewhere小题4:.

A．lower

B．more

C．higher

D．less小题5:.

A．secretary

B．manager

C．customer

D．engineer小题6:.

A．making

B．to make

C．made

D．was making小题7:.

A．little

B．its

C．no

D．few小题8:.

A．tall

B．high

C．low

D．short小题9:.

A．raise

B．cut

C．keep

D．hold小题10:.

A．place

B．get

C．give

D．carry out小题11:.

A．already

B．obviously

C．still

D．undoubtedly小题12:.

A．because

B．even if

C．so that

D．even小题13:.

A．walk

B．struggle

C．come

D．give in小题14:.

A．best

B．strongest

C．youngest

D．kindest小题15:.

A．Even

B．Just

C．Suddenly

D．Immediately小题16:.

A．warn

B．leave

C．help

D．see小题17:.

A．waited

B．set back

C．sighed

D．telephoned小题18:.

A．think

B．know

C．expect

D．understand小题19:.

A．future

B．money

C．computers

D．people小题20:.

A．company

B．headache

C．problem

D．question

起重机把质量为0.6t的重物匀速提升了3m，而它的电动机所做的功是3.4×10⁴J。（g取10N/kg）

（1）起重机做的有用功为多少？

（2）起重机的机械效率是多少？

（3）如果电动机完成这些功所用的时间为17s，则电动机的功率为多少？

我国工业硫磺质量标准为（）。

A、GB/T2449－1995

B、GB/T2450－1992

C、GB/T2449－1996

D、GB/T2449－2006