今利用高程为418.302米的水准点测设设计标高418.000米的点，设后视读数为1

男，55岁，上腹部无规律性疼痛、消瘦一年入院，胃镜示胃小弯处有一个2cm×2cm大小溃疡，边缘不整齐，有坏死，少量渗血。查体表淋巴结对诊断意义最大的是（）。

A.颈前、颈后

B.锁骨上窝

C.枕后

D.腋下

E.腹股沟

阅读理解。

                              Types of the Shanghai Expo 2010 Tickets and Regulations

1. _____ can get a Special Admission ticket for himself/herself. [ ]

A. A 56-year-old bus driver

B. A school girl with her valid student card

C. A policeman in his forties

D. A U.S. army officer on active duty

2. If you want to enter the Expo Park once every week in one month and don't want to bother to buy the

    ticket each time, you can buy a _____ ticket.[ ]

A. Single Day Admission

B. Special Admission

C. 3 Day Admission

D. 7 Day Admission

3. The function of the table is to _____. [ ]

A. remind the public of the difficulty buying the Expo tickets

B. show which groups of people can get admission into the Expo Park

C. provide information about the Expo tickets and regulations

D. introduce all the visiting regulations in the Expo Park

男性，32岁，2周前患上呼吸道感染、发热，近2天开始心悸，气短，胸闷不适，脉搏有间歇现象，经心电图诊断为频发房性期前收缩，出现下列哪项表现，符合房性期前收缩的心电图诊断（）。

A.QRS波前可见正向P波，P-R间期0.05秒

B.QRS后有逆行P间期0.20秒

C.QRS波前有异位P波，呈双相，P-R单项0.18秒

D.QRS波前有逆行P波，P-R间期0.10秒

E.具有完全性代偿间歇

市文明委印发的《海口市2015年全民公益活动方案》包含哪些主题活动？

下列白细胞中免疫细胞主要是（）

A.淋巴细胞

B.单核细胞

C.嗜酸性粒细胞

D.嗜碱性粒细胞

E.中性粒细胞