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【单选题】
通向防烟楼梯前室和楼梯间的应为（）级。A.
甲
B.
乙
C.
丙
D.
特种防火门
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皮皮学刷刷变学霸
举一反三
【单选题】When collective decision making is utilized to resolve economic questions regarding the allocation of resources, then:
A.
everyone will receive an equal share of the output produced.
B.
the preferences of individuals are of no importance.
C.
economic efficiency will be assured.
D.
the role of markets will be replaced by political decision making.
【简答题】Have you come to a decision regarding the installation of the machine?
【多选题】Regarding decision trees, which of the following are true?
A.
A decision tree is a binary tree.
B.
A non-leaf node in a decision tree represents a test on an attribute.
C.
A leaf node in a decision tree stores a class label that represents the result of classifcation.
D.
The more complex a decision tree is, the more accurate the classification is.
【单选题】Which of the following is the most accurate statement regarding ethics as applied to decision making in accounting?
A.
Ethics involves making difficult choices under pressure, and should be kept in mind in making every decision, including those involving accounting.
B.
Ethics has no place in accounting, since accounting deals purely with numbers.
C.
It is impossible to learn ethical decision making, since it is just something you decide to do or not to do.
D.
Ethics is becoming less and less important as a field of study in business.
【简答题】DNA在生命过程中主要起着（）的作用。记载在DNA分子的碱基序列中的遗传信息，通过DNA分子复制，准确的由上一代传递给下代；同时，又可以通过RNA做媒介，表达成为不同的蛋白质，执行各种生物功能，保证生命过程的运行。
【多选题】各种RNA的生物学功能说法正确的是()
A.
mRNA 是DNA的转录产物，含有DNA的遗传信息，可以指导一条多肽链的合成，它是合成蛋白质的模板
B.
tRNA 携带、运输活化了的氨基酸，为蛋白质的生物合成提供原料。因其含有反密码子环，所以具有辨认mRNA上相应的密码子的作用（即翻译作用）
C.
rRNA 不能单独存在，与多种蛋白质构成核糖体（核蛋白体），核糖体是蛋白质合成的场所
D.
苷酸断裂三种RNA相比较，mRNA含量最多，tRNA种类做多
【单选题】Making an informed decision regarding your career will:
A.
Decrease the likelihood that you will be satisfied with it.
B.
Do nothing.
C.
Increase the likelihood that you will be satisfied with it.
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