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【多选题】
下列关于离子交换树脂的交换容量的说法正确的是?A.
交换容量是树脂最重要的特征参数
B.
离子交换树脂功能基团的数目是交换容量的基础
C.
交换容量的单位可以是 meq / g 树脂 ( 毫克当量 / 克树脂 )
D.
交换容量的单位可以是体积交换容量 , 即 meq / ml 湿树脂
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举一反三
【单选题】All of the following foods are rich in resistant starch EXCEPT
A.
pasta
B.
grains
C.
legumes
D.
vegetables
【单选题】If the price of pasta increases and a consumer buys more pasta, we can infer that
A.
Pasta is a normal good, and the income effect is greater than the substitution effect.
B.
Pasta is a normal good, and the substitution effect is greater than the income effect.
C.
Pasta is an inferior good, and the income effect is greater than the substitution effect.
D.
Pasta is an inferior good, and the substitution effect is greater than the income effect.
【单选题】以下STM32微控制器中,使用ARM Cortex-M4内核的有( )
A.
STM32F429VET6
B.
STM32F103C8U6
C.
STM32F722RCT6
D.
STM32L552MEY6
【简答题】定时时间的计算 与定时器寄存器初始化相关的数据结构在库文件“ stm32f10x_tim.h ”中: /* TIM Base Init structure definition */ typedef struct { u16 (1)/* 定时周期值: Period value */ u16 (2) /* 预分频因子: Prescaler value */ u16(3)/* 定时器分频因子: ...
【单选题】What is Mariangela's attitude to traditional pasta?
A.
She thinks only Italians can make traditional pasta.
B.
She would prefer to cook more traditionally.
C.
She loves to break away from tradition.
【单选题】Besides pasta recipes， the Ragu Web also sells 36 kinds of pasta.
A.
Right
B.
Wrong
C.
Not mentioned
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