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问题 单项选择题

如图，在正常胸部X线影像图像上，该英文字母所代表的肺段为()

A．尖段

B．后段

C．尖后段

D．舌叶上段

E．舌叶下段

答案

参考答案：E

单项选择题

水准仪型号为DS0.5，其中数字下标表示了每公里往返测高差中数的中误差为( )。

A．0.5mm

B．5cm

C．0.5m

D．5m
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单项选择题 共用题干题

(1) is a method of constructing a project schedule network diagram that uses boxes or rectangles, referred to as nodes, to represent activities and connects them with arrows that show the dependencies.This method includes following types of dependencies or precedence relationships: (2) the initiation of the successor activity, depends upon the completion ofthe predecessor activity.(3) the initiation ofthe successor activity, depends upon the initiation ofthe predecessor activity.

空白（3）处填（）

A.F-S

B.F-F

C.S-F

D.S-S
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