干细胞的形态特征不包括()。 A.有明显的细胞界限 B.细胞核较大 C.有明显的核仁

题型:单项选择题

问题:

干细胞的形态特征不包括()。

A.有明显的细胞界限

B.细胞核较大

C.有明显的核仁

D.有一个或者多个核仁

考点:基础生命科学基础生命科学题库
题型:单项选择题

摩托车在高速公路上行驶,时速不能超过()公里?

A.80公里 

B.90公里 

C.100公里 

题型:单项选择题

()是指网银柜台签约中,在柜台前端系统中为客户办理网银服务签约注册的营业网点。

A.开户行

B.主签约行

C.维护行

D.集中签约行

题型:单项选择题

下列关于数据表与窗体的叙述,正确的是( )。

A.数据表和窗体均能输入数据、编辑数据

B.数据表和窗体均能存储数据

C.数据表和窗体均只能以行和列的形式显示数据

D.数据表的功能用窗体也能实现

题型:单项选择题

心血管活动的调节

A.颈动脉窦和主动脉弓压力感受性反射是正反馈调节

B.去甲肾上腺素作为“强心”急救药

C.动脉血压下降,压力感受性反射调节的结果是降压反射

D.肾上腺素作为降压药

E.降压反射的生理意义是缓冲动脉血压的急剧变化,维持动脉血压的相对稳定

题型:单项选择题

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.

Which of the following is true of DHL according to the passage

A. It cooperates with TNT Skypack.
B. It is showing signs of exhaustion.
C. It might have a leading position in the international courier business.
D. It has an annual growth rate of 5%.

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