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问题 单项选择题 A1型题

鱼腥草抗菌的主要活性成分是（）

A.黄芩苷

B.穿心莲内脂

C.癸酰乙醛

D.月桂醛

E.苦参碱

答案

参考答案：C

单项选择题

Reviewing schedules with the customer during the project planning phase shows the customer that ______.

A) you welcome their input
B) you want the customer to have visibility on actual project status
C) your company is good at marketing and customer relations
D) your competitors do it
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单项选择题

射孔发射率不低于（）。

A.70%

B.75%

C.80%

D.85%
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