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问题 多项选择题

注塑压力的大小直接影响熔体的流动充模及制品质量。其大小与（）等因素有关。

A、塑料的性质

B、喷嘴与模具的结构

C、制品的形状

D、对制品精度要求

答案

参考答案：A, B, C, D

解答题
脱式计算（前3小道进行简便计算）：
456+259+144923-458-142635+498
65×106+4508000-243×18（45+26）×264．
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单项选择题

A trust management company offers a trust account with a stated annual rate of return of 6% in the first year and 8% in the second year. If returns are compounded quarterly with the initial account value of 100000 at the beginning of the first year, the account's value at the end of second year is closest to:（）

A. $114480

B. $114885

C. $171759
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