A chemical additive to LPG gives it a characteristic（）.

A . corrosive B . class B poison C . oxidizer D . explosive

A . chemical ignition B . spontaneous combustion C . chemical combustion D . radiation ignitio

A . acrylic acid B . benzene C . oleum D . vinyl toluene

A . /var/adm/sulog B . /etc/syslog.conf C . /etc/security/sysck.cfg D . /etc/security/login.cfg

A . HMC B . IVM C . VIOS D . IBM Director

A . SNMP Trap B . Alarm   C . CDP   D . Win32

A . ammonia B . rotten eggs C . gasoline D . None of the above

A . You must have two toxic vapor detectors or the pumproom must meet special requirements B . Each crew member must be provided with an emergency escape breathing apparatus C . A person taking cargo samples must wear protective clothing D . If you are also carrying allyl alcohol，the venting systems must be segregated

A . The master.info and relay.info files B . The relay log files C . The relay index file D . Mysql.slave_master_info table E . Mysql.slave_relay_log_info table F . Mysql.slave_worker_info table

A . HMC B . IVM C . VIOS D . IBM Director

A . pushed ahead B . towed alongside C . towed astern D . Any of the above

A . z/OS B . Linux C . Sun Solaris 9 D . Microsoft Windows 2003

A . HMC B . IVM C . VIOS D . IBM Director

A . the bacteria B . oxygen C . oxidizing function D . agitation functio

A . increase scavenge air pressure B . reduce fuel booster pump pressure C . adjust the fuel rack D . retard fuel injector timing

A . Electricity B . Chain reaction C . Pressure D . Smoke

A . Use Micro-Partitioning B . Configure a Virtual I/O Server C . Configure dynamic logical partitions D . Activate Advanced POWER Virtualizatio

A . You must have two toxic vapor detectors or the pumproom must meet special requirements B . Each crew member must be provided with an emergency escape breathing apparatus C . A person taking cargo samples must wear protective clothing D . If you are carrying propionic acid also，the venting systems must be segregated

A . HMC B . IVM C . VIOS D . IBM Director

A．Y B．N C．NG

A、 Air tunnels B、 Rail flatcars C、 Steam ships D、 Pipelines E、 Airlines

Natural foods, for example, vegetables, fruits and grains which have been grown in soil that is rich in organic matter. In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of which is to increase the amount—but not the quality—of foods grown in commercial farming areas. Natural foods also include animals which have been allowed to feed and move freely in healthy pastures. Compare this with what happens in the mass production of poultry: there are battery farms, for ex- ample, where thousands of chickens live crowded together in one building and are fed on food which is little better than rubbish. Chickens kept in this way are not only tasteless as food; they also produce eggs which lack important vitamins. There are other aspects of healthy eating which are now receiving increasing attention from experts on diet. Take, for example, the question of sugar, this is actually a non-essential food! Although a natural alternative, such as honey, can be used to sweeten food if this is necessary, we can in fact do without it. It is not that sugar is harmful in itself. But it does seem to be an additive: the quantity we use has grown steadily over the last two centuries and in Britain today each person consumes an average of 200 pounds a year! Yet all it does is provide us with energy, in the form. of calories. There are no vitamins in it, no minerals and no fibre. It is significant that nowadays fibre is considered to be an important part of a healthy diet. In white bread, for example, the fibre has been removed. But it is present in unrefined flour and of course in vegetable. It is interesting to note that in countries where the national diet contains large quantities of unrefined flour and vegetable, certain diseases are comparatively rare. Hence the emphasis placed on the eating of wholemeal bread and more vegetables by modern experts on healthy eating. Recently, some people are interested in natural foods because ______. A．these foods are fresh and sweet B．they want to change their eating habits C．these foods do not contain chemical additives and have not been affected by chemical fertilizers D．they don't like the processed foods

<img src='https://img2.soutiyun.com/shangxueba/ask/64290001-64293000/64291910/529008d927b67f31920b5858e5879e0b.png' /> A. area 0 stub o n routers R4 and R5 B. area 5 stub on routers R4 and R5 C. area 5 stub no - summary on routers R4 and R5 D. area 0 stub no - summary on router R4 and area 5 stub no - summary on router R5 E. area 5 stub no - summary on router R4 and area 5 stub on router R5