脐带导管拔除后应监测置管部位至少（）小时。 A.6 B.3 C.4 D.18 E.1_爱下问搜题

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问题单项选择题

脐带导管拔除后应监测置管部位至少（）小时。

A.6

B.3

C.4

D.18

E.12

答案

参考答案：E

单项选择题

As the director can't come to the reception, I'm representing the company ______.

A．on his account

B．on his behalf

C．for his part

D．in his interest

问答题简答题

如何理解税收制度的含义？