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问题 单项选择题

乳腺摄影专用正色胶片的特点不包括

A．高对比度
B．单层乳剂
C．高分辨率
D．高本底灰雾
E．对绿光敏感

答案

参考答案：D

解析：乳腺摄影用正色胶片是一种高分辨率、高对比、单层乳剂、对绿光敏感的乳腺专用胶片。

单项选择题

An analyst does research on a company's income and cash flow statement. The company classifies interest expense as an operating activity and reports the following information:
·Cash flow from operating activities is $200000
·Capital expenditures is $120000
·Free cash flow to the firm is $90000
·Free cash flow to equity is $70000
·Tax rate is 40%
The company's interest expense is closest to:（）

A. $6000

B. $16667

C. $25000
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单项选择题

襟翼手柄的什么襟翼位置，设有机械挡块（）？

A、襟翼1和襟翼5

B、襟翼1和襟翼15

C、襟翼5和襟翼15

D、襟翼2和襟翼10
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