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【简答题】
Text C Food Security and Sustainable Agriculture It is time to rethink how we grow, share and consume our food. If done right, agriculture, forestry and fisheries can provide nutritious food for all and generate decent incomes, while supporting people-centered rural development and protecting the environment. But right now, our soils, freshwater, oceans, forests and biodiversity are being rapidly degraded. Climate change is putting even more pressure on the resources we depend on, increasing risks associated with disasters such as droughts and floods. Many rural women and men can no longer make ends meet on their land, forcing them to migrate to cities in search of opportunities. A profound change of the global food and agriculture system is needed if we are to nourish today’s 925 million hungry and the additional 2 billion people expected by 2050. The food and agriculture sector offers key solutions for development,and is central for hunger and poverty eradication. Secretary-general of the United Nations has launched a Zero Hunger Challenge, inviting all nations to be boldly ambitious as they work for a future where no one goes hungry.
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皮皮学刷刷变学霸
举一反三
【单选题】男性,30岁,在普鲁卡因局部浸润麻醉下行双侧腋臭皮肤切除,两侧同时手术。手术中,病人突然大叫,惊厥,发绀,心率120次/分,处理应
A.
静脉输液
B.
静脉注射间羟胺
C.
静脉注射硫喷妥钠
D.
吸氧
E.
静脉注射肾上腺素
【简答题】催乳素是由()分泌的,催产素是由()释放的。
【单选题】由神经垂体分泌的激素是( )。
A.
生长素和催产素
B.
胰岛素和催乳素
C.
催产素和抗利尿激素
D.
去甲肾上腺素和生长素
E.
血管升压素和催乳素
【简答题】催产素是由 (间脑的一个组成)分泌的,胰岛素是由 所分泌的。
【单选题】催产素是由 下列哪个组织 分泌的
A.
脑垂体
B.
下丘脑
C.
卵巢
D.
子宫
【单选题】催产素是由什么分泌的?
A.
脑垂体。
B.
下丘脑。
C.
卵巢。
D.
子宫。
E.
黄体。
【单选题】已知 K sp q (AgCl)=1.8 ́ 10 -10 , K sp q (Ag 2 C 2 O 4 )=3.4 ́ 10 -11 , K sp q (Ag 2 CrO 4 )=1.1 ́ 10 -12 , K sp q (AgBr)= 5.0 ́ 10 -13 。在下列难溶银盐饱和溶液中, c (Ag + ) 最大的是( )。
A.
AgCl
B.
AgBr
C.
Ag 2 CrO 4
D.
Ag 2 C 2 O 4
【单选题】已知 j q (Ag + /Ag)=0.80V , AgCl 的 K sp 为 1.8×10 -10 , 则 j q (AgCl/Ag) 为 ( )
A.
1.37V
B.
0.51V
C.
0.23V
D.
0.61V
【单选题】已知 K sp q (AgCl)=1.8 ×10 -10 ,K sp q (AgBr)=5.0 ×10 -13 ,K sp q (AgI)=8.3 ×10 -17 ,K sp q (Ag 2 CrO 4 ) =1.1 ×10 -12 , 在含有相同浓度的 Cl - 、 Br - 、 I - 、 CrO 4 2- 的混合溶液中逐滴加入 AgNO 3 溶液 , 最后出现的沉淀是 : ( )。
A.
AgCl
B.
AgBr
C.
AgI
D.
Ag 2 CrO 4
【判断题】催产素是由腺垂体合成分泌的。
A.
正确
B.
错误
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