坚持( )，坚决克服消极腐败现象。A．政治建警 B．从严治警、依法治警 C．依法治

患者男，52岁。间歇发作上腹部疼痛15年，加重1周入院。患者于15年前出现上腹部隐痛，进食后可缓解，当时未予以重视，患者近1周前出现上腹部疼痛加重，伴呕吐症状，呕吐物为宿食，量多，未见血块，无黑便，无咳嗽、气促、发热，体重减轻2kg。

该患者应诊断为（）

A.胃癌

B.幽门梗阻

C.溃疡性穿孔

D.溃疡性出血

E.慢性胃炎

F.肠梗阻

G.肝炎

The blue of the sea is caused by the scattering of sunlight by tiny particles suspended in the water. Blue light, being of short wavelength, is scattered more efficiently than light of longer wavelengths. Although waters of the open ocean are commonly some shade of blue, green water is commonly seen near coasts, especially in tropical or subtropical regions. This is caused by yellow pigments being mixed with blue water. Phytoplankton are one source of the yellow pigment. Other microscopic plants may color the water brown or brownish-red. Near the shore, silt or sediment in suspension can give water a brownish hue. Outflow of large rivers can often be observed many miles offshore by the coloration of suspended soil particles.Marine phytoplankton (Greek for "plant wanderers") are microscopic single-celled plants that include diatoms, dinoflagellates, coccolithophorids, green algae, and blue-green algae, among others. The growth of these organisms, which photosynthesize light, depends on a delicate balance of nutrient enrichment via vertical mixing, which is often limited by the availability of nitrogen and light. Diatoms are one-celled plants with patterned glass coverings. Each glass, or silicon dioxide box, is ornamented with species-specific designs, pits, and perforations making them popular with microscopists and, more recently, electron scanning microscopists.

The main idea of this passage is that________.

A．light causes sea color

B．sea coloration is varied because of a combination of length of light waves and microscopic plant life and silt

C．microscopic plant life causes sea color

D．water composition causes sea color

绝缘工具的检查性试验是将绝缘工具分成若干段进行直流耐压试验。

下列各项中仅在某一特定行政区域发生法律效力的是（）

A.《药品管理法》

B.《食品安全法》

C.《医疗机构管理条例》

D.《天津市献血条例》

E.《传染性非典型肺炎防治管理办法》