梗死灶的形状取决于( )。A．坏死的类型 B．坏死灶的大小 C．梗死灶内的含血量

Probably every town in the United States has a post office. Some are very small, and you may also find them in the (11) of a shop. Others are large buildings. They are open five days a week and Saturday morning. From Monday through Friday they are usually open from 8:30 am to (12) .
If you know how much the postage is for your letter, you can buy stamps at any (13) . In some post office you can buy stamps from machines. Stamps are sold at many different prices, from one cent to many dollars, ff you are not sun (14) postage is for your letter, you can ask the clerk. He or she will give you the stamps you need.
At a post office you can also buy postcards. A postcard is (15) than a letter.

处理日常营业工作属于业务扩充工作的内容。

如图，锥形瓶内有气体X，分液漏斗内有液体Y，如果Y流下，过一会儿，小气球鼓起，气体X和Y不可能（ ）

A．X是NH₃，Y是KCl溶液

B．X是SO₂，Y是NaOH

C．X是H₂，Y是浓硫酸

D．X是CO₂，Y是KOH

一男性，15岁，时有腰背部疼痛、僵硬3月，休息时加重，其祖父患有强直性脊柱炎。经骶髂关节摄片见关节面可疑模糊。无皮疹，无肠道和泌尿系统感染病史。

此时首选治疗药物是（）。

A.甲氨蝶呤

B.雷公藤

C.环磷酰胺

D.硫氮磺胺吡啶

E.糖皮质激素

按照党的十六大关于全面提高开放水平和整顿规范市场秩序的有关精神，2002年国家质检总局发布了《出入境检验检疫报检员管理规定》，进一步加强对出入境检验检疫报检员的管理，规范报检员的报检行为。该项措施的意义主要有______

A．保障检验检疫行政执法工作的顺利开展
B．增加出入境检验检疫工作透明度，维护有关当事人的合法权益
C．更好地营造口岸“大通关”环境，提高口岸通关效率
D．指导报检员顺利、高效地办理出入境检验检疫手续，保证进出境货物、交通工具等的正常通关