《齐民要术》的内容不包括[ ] A．生产技术和生产工具要不断进行改革 B．农、林

根据施工安全检查的内容，安全检查的主要内容包括查思想和( )。

A．查制度

B．查隐患

C．查整改

D．查责任

E．查伤亡事故处理

女性，29岁。中上腹疼痛3个月，间歇黑便10天来诊。无其他不适，胃镜检查见胃窦部5cm×6cm溃疡型肿块，拟诊胃恶性肿瘤住院。体检：浅表淋巴结不肿大，肝脾肋下未及。胸片、腹腔CT及骨髓涂片均无异常发现。随后行胃大部切除术，手术后病理诊断为胃恶性淋巴瘤，弥漫性B细胞型。

本例最佳治疗方案是（）

A.手术切除

B.放射治疗

C.CHOP方案化学治疗

D.放射治疗加化学治疗

E.手术切除加手术后胃床照射加全身化学治疗

胸膜间皮瘤的外科手术适应证包括（）

A.肿瘤孤立、有完整包膜

B.肿瘤穿透膈肌侵及腹腔，对侧胸膜受侵

C.肿瘤基底部侵及胸壁

D.肿瘤侵及肺

E.有远处转移

The biggest safety threat（威胁）facing airlines today may not be a man with a gun ,but the man with portable（便携式）computer in business class .In the past 15 years ,pilots have reported about over 100 incidents that could have been caused by electro-magnetic interference(电磁干扰) .The source of this interference remain unclear ,but increasingly ,experts are pointing the blame at portable electronic devices（设备）such as portable computers ,radio and mobile telephones .

RTCA ,an organization which advises the aviation industry ,has suggested that all airlines ban, such devices from being used during “key” stages of flight ,particularly take-off and landing .Some experts have gone further ,calling for a total ban during all flights .Nowadays ,rules on using these devices are left up to airlines. And although some airlines ban passengers from using such equipment during take-off and landing ,most are not willing to exercise a total ban ,if many passengers want to work during flights .

The difficulty is understanding how electromagnetic fields might affect an aircraft’s computers .Experts know that portable devices give off radiation which affects those wave lengths which aircraft uses for communication .But because they have not been able to reproduce these effects in a laboratory ,they have no way of knowing whether the interference might be dangerous or not .

The fact that aircraft may be in trouble because of the interference raises the danger

that some people may use radio systems in order to damage navigation（导航）equipment .As worrying ,though ,is the passenger who can’t hear the instruction to turn off his radio because the music is too loud .

小题1:.

.What is said about over 100 aircraft incidents in the past 15 years ?

A They may have taken place during take-off and landing .

B They have been caused by the damage to the radio systems .

C They were said to have resulted from electro-magnetic interference .

D They were caused by the passengers’ portable computers .

小题2:.

. Few airlines want to refuse a total ban on their passengers because ____ .

A they have other effective safety measures to fall back on

B they don’t believe there is such a danger as radio interference

C the effect of electromagnetic interference is yet to be proved

D most passengers refuse to take a plane which bans the use of radio 

小题3:.

. Why is it difficult to see the effects of electromagnetic fields on computers ?

A Experts lack proper equipment to such research .

B It is dangerous to carry out such research on an airplane .

C It remains a question what wave lengths are to be interfered with .

D Scientists are not able to produce the same effects in laboratory .

小题4:.

It can be inferred from the passage that the author ___ .

A hasn’t formed his own opinion on this problem

B has fully understood the danger of electromagnetic interference

C regards it is as unreasonable to exercise a total ban during flight

D is in favor of banning passengers’ use of electronic devices

简述变速器的装配注意事项。