假定通过复制、粘贴操作建立了一个命令按钮数组Cornmand1,以下说法中错误的是______。
A. 数组中每个命令按钮的名称(Name属性)均为Command1
B. 若未做修改,数组中每个命令按钮的大小都一样
C. 数组中各个命令按钮使用同一个Click事件过程
D. 数组中每个命令按钮的Index属性值都相同
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The big lake was contaminated with waste waters from nearby factories.
A. widened
B. blackened
C. polluted
D. mixed
The parents have to restrain their daughter from playing cyber games.
A. disallow
B. reduce
C. prevent
D. confine
The manager talked over the requirement of the new job with him.
A. discussed
B. mentioned
C. accepted
D. rejected
某塑料管无毒、价廉,但抗冲击强度较差。经改性后具有较好的抗冲击性能和具有耐温度变化性能、抗蠕变性能,采用熔接方式连接,此管材为____。
A. 硬聚氯乙烯管
B. 聚乙烯管
C. 聚丙烯管
D. 聚丁烯管