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【单选题】
While you are working in a space, the fixed C02 system is accidentally activated. You should_________.
A.
secure the applicators to preserve the charge in the cylinders
B.
continue with your work as there is nothing you can do to stop the flow of C02
C.
retreat to fresh air and ventilate the compartment before returning
D.
make sure all doors and vents are secured
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参考答案:
举一反三
【单选题】绿篱的日常养护主要是( )。
A.
浇水
B.
修剪
C.
病虫害防治
D.
施肥
【单选题】下列哪项 不是 碳水化合物的生理意义?
A.
供能
B.
构成细胞和组织的成分
C.
解毒
D.
促使机体从蛋白质获取能量
E.
维持神经系统的正常功能
【单选题】下列哪项不是碳水化合物的生理意义?
A.
供给能量
B.
构成细胞和组织的成分
C.
解毒作用
D.
促使机体从蛋白质获取能量
E.
维持神经系统的正常
【单选题】Suppose that good X has a negative income elasticity of demand. This implies that the good is
A.
a normal good.
B.
a necessity.
C.
an inferior good.
D.
a luxury.
【单选题】冬青作为绿篱使用时常用做( )。
A.
编篱
B.
果篱
C.
花篱
D.
常绿绿篱
【简答题】痿证的病机主要是______、______、______、______。
【单选题】Suppose good X is a substitute of good Y. Everything else r emaining unchanged, an increase in price of g ood Y will lead to: a. an increase in demand for good Y. b. a decrease in demand for good X. c...
A.
B.
C.
D.
D
【单选题】哪项不是碳水化合物的生理意义( )。
A.
供给能量
B.
构成细胞和组织的成分
C.
解毒作用
D.
促使机体从蛋白质获取能量
E.
抗生酮作用
【单选题】Suppose good X is a substitute of good Y. Everything else remaining unchanged, an increase in price of good Y will lead to:
A.
a. an increase in demand for good Y.
B.
b. a decrease in demand for good X.
C.
c. an increase in demand for good X.
D.
d. a decrease in price of good X. d. a decrease in price of good X.
【简答题】积聚的病机主要是( )
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