下列项目哪些不是借贷记账法的特点( )。A．以“借”或“贷”作为记账符号 B．以“

10=4X-8不是方程．______．（判断对错）

患者，女，55岁。反复呕吐大量隔餐食物。查体：中上腹可见蠕动波，上腹部闻及震水音。应首先考虑的是（）

A.肠梗阻

B.急性胃炎

C.幽门梗阻

D.急性胆囊炎

E.反流性食管炎

You are looking at the following data. Project A has a CPI of 0.8 and SPI of 1.2 and EV of 450. Project B has CPI of 1.2 and SPI of 0.8 and EV of 650. Which of the following statement is true ？（）

A．Project B is performing better because it has a higher earned value

B．Project A has schedule slippage and project B is ahead of schedule

C．Crashing project A is a good option

D．Crashing project B is a good option

以下PIMV2的几种消息中，目的地址为组播地址的有（）。

A.Hello

B.Join

C.Prune

D.Assert

E.Graft

F.Graft-ACK