感应式电流继电器的电磁元件的动作电流可通过调节（）的大小来调整，（）越大则动作电流越

患者，男性，28岁，近5日来左侧下磨牙后区肿胀疼痛，近1日来咀嚼、吞咽、开口活动时疼痛加重、面部肿胀明显，检查：近中阻生，压迫龈袋内有分泌物溢出，探敏感，叩（-），不松，冷刺激敏感。

此患者正确的诊断为（）

A.急性牙髓炎

B.慢性牙髓炎

C.急性冠周炎

D.左侧咬肌间隙感染

E.以上都不是

中国环境污染问题十分突出，生活垃圾是其中的污染源之一．据统计全国平均每个家庭每天丢弃废塑料袋4个，全国13亿人口，如果平均每个家庭按5人计算，平均每1000个塑料袋按0.5公斤计算，全国一天丢弃的塑料袋有多少吨？

无并发症的肺炎球菌肺炎最主要的治疗措施是( )

A．卧床休息

B．高热时物理降温

C．抗菌

D．祛痰、止咳、吸氧

E．补充血容量

Massachusetts （美国一州名） became the first state in the nation to ban the dumping （倾倒;抛弃） of electronic equipment such as computer monitors and television sets．It means people there can no longer put computer monitors, TV sets and other devices containing glass picture tubes out on the street for pickup by garbage cleaners．

Official said much of this equipment is loaded with poisonous heavy metals such as lead, cadmium and mercury．These poisonous heavy metals could go into groundwater or be released （释放） into the air．

The Boston Globe reports the state has set up a system to recycle techno-garbage at state expense through community recycling centers．

Robin Ingenthron of the Massachusetts Department of Environmental Protection said the state has been trying to get its electronics-recycling program in place ‘before the future wave of electronics hits’．The National Safety Council estimates some 300 million computers will enter the nation’s waste system in the next few years．

In addition, millions of people will be getting rid of their old television sets．New high-quality digital televisions and new rules will make old TV sets no longer in use over the next several years．

小题1:The word ‘techno-garbage’ in the 3rd paragraph probably means ________．

A．all kinds of dirty things

B．deserted TV sets

C．heavy metals

D．used electronic equipment小题2:Which is NOT a reason that the state enforces （强制执行） a ban on electronic equipment dumping?

A．This kind of garbage is poisonous．

B．Recycling systems are not working well．

C．The poisonous heavy metals can go to the underground water and the air．

D．There will be much more electronic garbage soon．小题3:According to the last paragraph many people will be dumping their TV sets because ________．

A．they are broken

B．they are poisonous

C．new TV standards have come out

D．people will be tired of them小题4:The passage tells us chiefly about __________．

A．forbidding of a certain type of garbage dumping

B．new problems of environmental protection

C．household problems raised by computers and TV sets

D．the handling of garbage

呼吸道内不能参与肺泡与血液之间的气体交换的空间为（）

A.生理死腔

B.解剖死腔

C.每分钟通气量

D.肺泡通气量

E.肺泡死腔