皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
下列关于省力杠杆的描述,正确的是:
A.
动力点在阻力点和支点之间，动力臂比阻力臂长
B.
阻力点在动力点和支点之间，动力臂比阻力臂长
C.
动力点在阻力点和支点之间，动力臂比阻力臂短
D.
阻力点在动力点和支点之间，动力臂比阻力臂短
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【简答题】The concentration of the three air pollutants in air quality standards are shown as the following: SO 2 : 0.03 ppm , O 3 : 157 μg/m 3 , CO: 9 ppm Please finish the units conversion between ppm a...
查看完整题目与答案
【判断题】胃底腺的壁细胞分泌盐酸和内因子，主细胞分泌胃蛋白酶原。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】胃底腺的壁细胞分泌
A.
盐酸
B.
Na离子
C.
胃蛋白酶
D.
粘液
查看完整题目与答案
【单选题】关于消化道类癌下列哪项是错误的
A.
发生于黏膜腺体
B.
瘤细胞小，形态一致为圆形或多角形
C.
好发生于阑尾
D.
胞质内含嗜酸性颗粒
查看完整题目与答案
【单选题】关于消化道类癌下列哪项是错误的?( )
A.
发生自粘膜腺体的嗜铬性细胞
B.
发生自Kultchitsky细胞
C.
胞浆颗粒内含5S-I
D.
胞浆内含嗜酸性颗粒
E.
瘤细胞较少,形态一致为圆形或多角形
查看完整题目与答案
【单选题】You installed Oracle Database 11g and are performing a manual upgrade of the Oracle9i database. As a part of the upgrade process, you execute the following script: SQL>@utlu111i.sql Which statement ab...
A.
It must be executed from the Oracle Database 11g environment.
B.
It must be executed only after the SYSAUX tablespace has been created.
C.
It must be executed from the environment of the database that is being upgraded.
D.
It must be executed only after AUTOEXTEND is set to ON for all existing tablespaces.
E.
It must be executed from both the Oracle Database 11g and Oracle Database 9i environments.
查看完整题目与答案
【单选题】Look at the following statements (Questions 4-9) and the list of people below. Match each statement with the correct person, A-G . Write the correct letter, A-G , in boxes 4-9 on your answer sheet. NB...
A.
A
B.
B
C.
C
D.
D
E.
E
F.
F
G.
G
查看完整题目与答案
【简答题】Directions: Choose the right words to fill in the gaps. A. First B. Next C. Then D. Finally E. enjoy F. wait for G. turn off H. cut up I. turn on J. pour 1 , 2 the bananas...
查看完整题目与答案
【单选题】胃底腺的壁细胞分泌
A.
盐酸
B.
NA 离子
C.
胃蛋白酶
D.
粘液
查看完整题目与答案
【单选题】关于胰腺癌,下列哪项是错误的
A.
初发症状多系上腹痛,黄疸和消化道症状
B.
多发生在胰腺的头颈部
C.
组织学类型多属导管细胞癌
D.
恶性程度高,切除率高,预后好
E.
胰头癌传统手术方式是Whipple氏术
查看完整题目与答案
相关题目：
【简答题】The concentration of the three air pollutants in air quality standards are shown as the following: SO 2 : 0.03 ppm , O 3 : 157 μg/m 3 , CO: 9 ppm Please finish the units conversion between ppm a...
查看完整题目与答案
【判断题】胃底腺的壁细胞分泌盐酸和内因子，主细胞分泌胃蛋白酶原。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】胃底腺的壁细胞分泌
A.
盐酸
B.
Na离子
C.
胃蛋白酶
D.
粘液
查看完整题目与答案
【单选题】关于消化道类癌下列哪项是错误的
A.
发生于黏膜腺体
B.
瘤细胞小，形态一致为圆形或多角形
C.
好发生于阑尾
D.
胞质内含嗜酸性颗粒
查看完整题目与答案
【单选题】关于消化道类癌下列哪项是错误的?( )
A.
发生自粘膜腺体的嗜铬性细胞
B.
发生自Kultchitsky细胞
C.
胞浆颗粒内含5S-I
D.
胞浆内含嗜酸性颗粒
E.
瘤细胞较少,形态一致为圆形或多角形
查看完整题目与答案
【单选题】You installed Oracle Database 11g and are performing a manual upgrade of the Oracle9i database. As a part of the upgrade process, you execute the following script: SQL>@utlu111i.sql Which statement ab...
A.
It must be executed from the Oracle Database 11g environment.
B.
It must be executed only after the SYSAUX tablespace has been created.
C.
It must be executed from the environment of the database that is being upgraded.
D.
It must be executed only after AUTOEXTEND is set to ON for all existing tablespaces.
E.
It must be executed from both the Oracle Database 11g and Oracle Database 9i environments.
查看完整题目与答案
【单选题】Look at the following statements (Questions 4-9) and the list of people below. Match each statement with the correct person, A-G . Write the correct letter, A-G , in boxes 4-9 on your answer sheet. NB...
A.
A
B.
B
C.
C
D.
D
E.
E
F.
F
G.
G
查看完整题目与答案
【简答题】Directions: Choose the right words to fill in the gaps. A. First B. Next C. Then D. Finally E. enjoy F. wait for G. turn off H. cut up I. turn on J. pour 1 , 2 the bananas...
查看完整题目与答案
【单选题】胃底腺的壁细胞分泌
A.
盐酸
B.
NA 离子
C.
胃蛋白酶
D.
粘液
查看完整题目与答案
【单选题】关于胰腺癌,下列哪项是错误的
A.
初发症状多系上腹痛,黄疸和消化道症状
B.
多发生在胰腺的头颈部
C.
组织学类型多属导管细胞癌
D.
恶性程度高,切除率高,预后好
E.
胰头癌传统手术方式是Whipple氏术
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题