什么是直流锅炉启动时的膨胀现象？引起它的原因是什么？

集体劳动争议处理的特别程序与普通程序相比，其特点是()。

A.仲裁委员会应当自收到集体劳动争议申诉书之日起3日内作出受理或不予受理的决定

B.劳动争议促裁庭为特别合议促裁庭，由3人以上的单数促裁员组成

C.劳动者一方当事人应当推举代表参加仲裁活动，代表人数由仲裁委员会确定

D.影响范围大的集体劳动争议案件，县级仲裁委员会认为有必要，可以将集体劳动争议报请市(地、州、盟)仲裁委员会处理;促裁委员会在作出受理决定的同时，组成特别仲裁庭，以通知书或布告形式通知当事人;决定不予受理的，应当说明理由

E.集体劳动争议应自组成仲裁庭之日起15日内结束，需要延期的，延长期限不得超过15日

阅读园地。

　　孔子东游，见两小儿辩斗，问其故。    

　　一儿曰：“我以日始出时去人近，而日中时远也。    

　　一儿以日初出远，而日中时近也。    

　　一儿曰：“日初出大如车盖，及日中则如盘孟，此不为___________？”

　　一儿曰：“日初出沧沧凉凉，及其日中如探汤，此不为___________？”

　　孔子不能决也。    

　　两小儿笑曰：“孰为汝多知乎？”

1． 按原文填空。

2．说说下列句中加粗字的意思。  

（1）日始出时去人近。（       ）     

（2）孔子不能决也。（       ）

3． 两小儿“辩斗”的是什么事？他们为什么会得出不同的结论？

____________________________________________

如图所示电路，电源电压保持不变，闭合开关S，当变阻器滑片P在中点a处时，电流表读数为0.6 A；当滑片P在b端时，电压表读数为5 V，电流表读数为0.5 A，请根据测得的数据计算出前后两次在电阻R₁上消耗的功率．

导游人员年审管理中，要求导游人员必须参加所在地旅游行政管理部门举办的年审培训。每年累计培训时间不得少于( )。

A．40小时

B．48小时

C．56小时

D．64小时

While some international couriers are showing signs of exhaustion, EMS (Express Mail Service), the generic name for the courier services of post offices, seems to be finding its stride. Known as Datapost in Britain, as Chronopost in France, and as A1-Barid al-Mumtaz in Saudi Arabia, EMS is now second in the international courier business (jointly with TNT Skypack). Last year it delivered 5.6 million items, weighing less than 20 kilograms each, across borders. That and its annual growth rate of around 5 percent have worried DHL, the market leader, enough for it to counter-attack in the Courts.
On October 26, a Dutch judge ruled against DHL on all three counts filed against the Dutch post office: that the three-initial name was too close to DHL’s; that the orange lines in the EMS logo were too similar to DHL’s dark red ones; and that the claim to the widest route system in the world was unfounded. DHL has threatened the Swiss post office with similar action, but it may reconsider after the Dutch ruling.
EMS has some advantages over the private couriers. One is a dense ready-made network of offices, especially in Europe, the avowed target area of the private couriers. Another advantage is a long tradition of working with customs authorities. In a business where minutes count, it pays to have good friends at customs. That advantage particularly irritates the private couriers because there is no legal way to combat such unquantifiable coziness.
The private courier services are also annoyed because in countries like Switzerland and Italy, where the post office is officially a monopoly, they pay it a fee. In Switzerland DHL says it pays more than SFr lm ($ 708,000) "to the competition" each year. In France the couriers have won a battle for exoneration.
Although governments are under little pressure to keep prices artificially low, EMS is often cheaper than the private couriers, but not always. A recent test in Britain (on a domestic route) showed Datapost about halfway between the least and the most expensive, but gave it full marks for speed and service.
Each national EMS is free to set its rates and follow its own rules on things like bulk discounts. The Universal Postal Union, based in Berne, determines how costs and revenues are split between sending and receiving countries, and standardizes procedures. More than 100 postal administrations have linked into the system—and more are coming, including Russia’s. That makes the feisty EMS particularly happy since its rivals have not been allowed to serve anywhere in Russia.

All the following factors are given as reasons for the annoyance of the private courier services EXCEPT ______.

A. lack of relations at customs
B. the monopoly of the post office
C. no network of offices

D. the shortage of workers