【单选题】关于肺段的描述,错误的是
A.
每一肺段支气管及其分支和它所属的肺组织称为肺段
D.
在肺段内,肺动脉的分支和肺段支气管的分支伴行,肺段间静脉行于相邻两肺段之间
【简答题】血糖浓度是调节胰素分泌的最重要因素。在持续高血糖刺激下,胰岛素的分泌可分为以下四个阶段:
第一阶段:血糖升高后,胰凫素分泌量立即增加,5min内可增加10倍,所释放的激素主要来源于胰岛B细胞内贮藏的激素。
第二阶段:5~15min内,胰岛素的分泌量逐渐下降。
第三阶段:15min后,胰岛素的分泌量再次增多,在2~3h达到高峰,并持续较长的时间,分泌速率也远大于第一阶段。这主要是胰凫素基因大量表达的...
【单选题】在竣工验收阶段,可以分为两次验收,一次为竣工后随主体工程的验收,主要验收设施质量然后在竣工后第二个雨季通过监测进行验收,并与计算模型相复核,以确定项目是否满足管控目标要求。( )
【单选题】A distinguishing feature of an educator, when compared to other pumps, is the _____.
A.
discharge end being smaller than the suction end
B.
small size of impeller
D.
ease at which the wearing rings may be changed
【单选题】-Excuse me, sir. This is my first time to come to Wal-Mart. Can you tell me where I can get the things I need? -Sure. Let me have a look at your shopping list. Oh, do you have a shopping list? -Yes. H...
A.
the restaurant serves good food at affordable prices
B.
he eats a lot of junk food and doesn’t get enough exercise
C.
the teacher’s advice certainly gave me food for thought
D.
you can get them from the Bakery and Bread section
【单选题】违反安全用电常识的做法有 :
A.
不要乱拉电线,乱接用电设备,更不要利用“一线一地”方式接灯照明
B.
不要在电力线路附近放风筝,打鸟,不在电杆或拉线上拴牲畜
C.
如发现因电气障碍或漏电起火时,立即用水或酸、碱泡沫灭火器灭火
【单选题】Some children learn to speak,read and write when they are very young compared _____ children.
【简答题】“You’ll have to take care of the baby today,” a woman told her husband. “I’m not feeling well.” “Then you must stay in bed and rest, dear” her husband said. “I’ll be pleased to look after our baby.” “...
【单选题】违反安全用电常识的做法有:()
A.
不要乱拉电线,乱接用电设备,更不要利用“一线一地”方式接照明灯
B.
不要在电力线路附近放风筝,打鸟,不在电杆或拉线上拴牲畜
C.
如发现因电气障碍或漏电起火时,立即用水或泡沫灭火器灭火