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【单选题】
我们与父母之间产生矛盾与代沟的直接原因是A.
社会地位不相同
B.
年龄差距
C.
兴趣爱好不同
D.
行为方式不同
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举一反三
【单选题】Which statement is false?
A.
A compound statement may contain definitions.
B.
A block may optionally contain definitions.
C.
A block that contains definitions can be used anywhere that a compound statement can be used.
D.
A compound statement that contains definitions is called a block
【单选题】Which statement is true?
A.
Assigning a value to a symbolic constant in an executable statement is a syntax error.
B.
A symbolic constant is a variable.
C.
Space is reserved for a symbolic constant as with variables that hold values at execution time.
D.
Only uppercase letters can be used for symbolic constant names.
【单选题】Which statement is FALSE?
A.
Collagen is a protein in which the polypeptides are mainly in the a -helix conformation.
B.
Disulfide linkages are important for keratin structure.
C.
Gly residues are particularly abundant in collagen.
D.
Silk fibroin is a protein in which the polypeptide is almost entirely in the b conformation.
E.
a -keratin is a protein in which the polypeptides are mainly in the a -helix conformation.
【单选题】数字信号的特点是
A.
在时间上和幅值上都是连续的。
B.
在时间上是离散的,在幅值上是连续的。
C.
在时间上是连续的,在幅值上是离散的。
D.
在时间上和幅值上都是不连续的。
【单选题】我国加入 WTO以后,民族工业受到来自发达国家竞争对手巨大冲击,各企业积极寻找应对措施。部分大型企业与中小型企业为了生存和发展,选择联合发展的道路,以应对强大的竞争对手,从而实现双赢。企业选择这种联合发展的到来了体现出经营战略的特征是( )
A.
全局性
B.
长远性
C.
竞合性
D.
相对稳定性
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