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问题 单项选择题

高分辨率CT扫描，层厚必须采用（）

A.1～2mm扫描层厚

B.3～4mm扫描层厚

C.5～6mm扫描层厚

D.8～10mm扫描层厚

E.10～20mm扫描层厚

答案

参考答案：A

多项选择题

关于片剂顶裂的原因有

A．组分弹性大

B．颗粒含水量过多

C．粘合剂用量不足

D．压力分布不均匀

E．颗粒中细粉过多
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单项选择题

A certain truck manufacturer must have sales of $4.5 billion to break even this year. If the manufacturer had sales of $ 1.9 billion for the first half of the year, then, to break even for the year, its sales for the second half must be approximately what percent higher than its sales for the first half ？（）

A．11%

B．16%

C．27%

D．37%

E．58%
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