对于网络号172.19.26.0/17,它的子网掩码是()A、255.255.192 发布时间:2017-05-06 01:47 │ 来源:www.tikuol.com 题型:单项选择题 问题: 对于网络号172.19.26.0/17,它的子网掩码是()A、255.255.192.0B、255.255.126.0C、255.255.128.0D、255.255.252.0
题型:单项选择题 完形填空。 Hello! My name is John. 1 members (成员) are in my family: my parents, my sister and I. My 2 is Frank, and he is 39. 3 phone number is 360-9821. My mother's name is Susan, and 4 is 37. My sister is a nice 5 . She is 6. Her 6 is Sonia. I'm 12. I'm a student (学生). Look! That's my 7 . Is it black? No, it isn't. It's 8 . It's a blue backpack. ( )1. A. Three ( )2. A. brother( )3. A. My ( )4. A. it ( )5. A. boy ( )6. A. name ( )7. A. pencil ( )8. A. black B. Four B. uncle B. Your B. he B. girl B. color B. backpackB. red C. Five C. father C. Her C. she C. watch C. family C. book C. green D. Six D. grandfather D. His D. that D. ring D. number D. ruler D. blue 查看答案
题型:单项选择题 患者,女,25岁,面突畸形,开唇露齿。∠SNA86°,∠SNB84.2°。牙科模型显示牙槽骨前突明显,中线偏右。后牙为正中咬合关系,关系基本正常。诊断为双颌前突。正颌术后如不采取适当的措施,手术效果将不理想,或出现畸形的复发,正颌术后畸形复发的原因包括()A.骨段离断不完全,骨段未能前移到位B.骨段接触面过小或无接触,导致骨不连接C.骨间间隙过大或植骨块固定不当D.骨间固定不可靠E.软组织的牵拉作用F.术后未及时行颌间牵引 查看答案
题型:单项选择题 下列叙述中哪些符合一氧化碳中毒引起的缺氧()A.HbCO无携带氧能力 B.CO抑制RBC之糖酵解,使2,3-DPG减少,氧离曲线左移 C.呼吸加深变快,肺通气量增加 D.皮肤、黏膜呈樱桃红色 E.轻度中毒者表现为头痛、头晕、恶心等 查看答案