以吸血为主要营养来源的寄生虫是: A: malaria parasite B: liver fluke C: hookworm D: roundworm E: tapeworm

The<br/>parasite can cause elephantiasis, hydrocele testis, chyluria is () A: Wuchereria<br/>bancrofti B: liver fluke C: hookworm D: Trichinella spiralis E: Ascaris lumbricoides

目前在我国仍有发病，每年在全世界引起死亡人数最多的寄生虫病是 A: A.intestina amoebiasis B: B.visceral leishmaniasis C: C. malaria D: D.Schistosomiasis E: E.hookworm disease

Which<br/>of the following is not true about the five parasitic diseases to be<br/>destroyed in our country () A: malaria B: schistosomiasis C: ascariasis D: leishmaniasis E: hookworm<br/>disease

哪些线虫的成虫对人体危害比幼虫大？（） A: Ascarislumbricoides B: 毛首鞭形线虫 C: hookworm D: 旋毛形线虫 E: 蠕形住肠线虫

目前在我国仍流行,且为非洲国家流行的最严重的寄生虫病是: A: intestinal amoebiasis B: visceral leishmaniasis (kala-azar) C: malaria D: schistosomiasis japonicum E: hookworm disease

How<br/>to prevent hookworm infection() A: do<br/>not walking with bare feet B: prevent mosquito biting C: do<br/>not eat raw meat D: drink boiling water

卵和幼虫都能感染人的寄生虫 A: Taenia solium and Trichinella spiralis B: Taenia solium and Enterobiusm vermicularis C: Hookworm and Enterobius vermicularis D: Taenia saginate and Enterobius vermicularis

氢原子轨道的能级高低是 A: E(1s)<E(2s)<E(2p)<E(3s)<E(3p)<E(3d)<E(4s) B: E(1s)<E(2s)<E(2p)<E(3s)<E(3p)<E(4s)<E(3d) C: E(1s)<E(2s)=E(2p)<E(3s)=E(3p)<E(4s)<E(3d) D: E(1s)<E(2s)=E(2p)<E(3s)=E(3p)=E(3d)<E(4s)

E→ E + E | E - E | E * E | E / E | ( E ) | i 下面的推导过程是句子i+i*i的规范推导的是: E=>E*E=>E*i=>E+E*i=>E+i*i=>i+i*i|E=>E*E=>E*i=>E+E*i=>i+E*i=>i+i*i|E=>E+E=>E+E*E=>E+E*i=>E+i*i=>i+i*i|E=>E+E=>E+E*E=>E+i*E=>E+i*i=>i+i*i