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【多选题】
在国家安全保障中,下列哪些是非传统安全保障手段和措施A.
军事攻防
B.
安全合作
C.
政治镇压
D.
环境保护
E.
情报保卫
F.
网络攻防
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皮皮学刷刷变学霸
举一反三
【单选题】As far as cost-push inflation goes, the United States
A.
has never experienced this type of inflation.
B.
has experienced only this type of inflation.
C.
experienced this type of inflation in the 1970s.
D.
experienced this type of inflation during the 1990s.
【单选题】下图为甲种植物细胞和乙种植物细胞的结构 ( 仅显示细胞核 ) ,下列有关叙述错误的是 ( )
A.
乙植物能产生 4 种不同类型的花粉
B.
将甲、乙两种植物杂交得到的植物为二倍体，可育
C.
用纤维素酶和果胶酶可以去除植物细胞的细胞壁
D.
经植物体细胞杂交得到的植物为四倍体，基因型为 DdYyRr
【简答题】设二维随机变量 的概率分布为 X Y 0 1 0 0.4 b 1 a 0.1 若随机事件 { X =0} 与 { X + Y =1} 相互独立,则 a = , b = 。
【单选题】( ) helps push food through the intestines , helping to prevent constipation.
A.
Glucose
B.
Fructose
C.
insoluble fiber
D.
Soluble fiber
【单选题】One example of cost-push inflation is an increase in
A.
the money prices of raw materials followed by no government policy.
B.
the money prices of raw materials followed by increases in the quantity of money.
C.
the money prices of raw materials followed by decreases in the quantity of money.
D.
government expenditure followed by increases in the quantity of money.
【简答题】Y X 0 1 0 0 1 0 设二维随机变量 的概率分布为 求数学期望和方差 、协方差 与相关系数 。
【单选题】Cost-push inflation can start with
A.
lower taxes.
B.
an increase in government expenditure.
C.
higher money wage rates.
D.
an increase in transfer payments.
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