cccbar连接CTI平台有两种方式，其中通过代理连接CTI的方式是（）。 A.WA

有一非饱和土样，在荷载作用下，饱和度由80%增加至95%。试问土样的重度γ和含水率怎样改变？()

A.γ增加，减小

B.γ不变，不变

C.γ增加，增加

扫频仪中，扫频信号发生器产生的信号是（）

A．锯齿波信号 

B．一般的正玄波信号 

C．脉冲信号 

D．频率随时间作线性连续变化的等幅正玄信号

有以下程序 main() { int a=3，b=4，c=5，d=2；if(a＞b)if(b＞c)printf("%d"，d+++1)；prind("%d，，，+十d+1)：prind("%d\n"，d)； } 程序运行后的输出结果是______。

A．2

B．3

C．43

D．44

（）是昆虫的2个体段。

A.胸部

B.腹部

C.头部

D.体壁部

Many students do not like tostudy history(历史)．They say that there are (41) many names and dates to (42) ．But if we do not know about the (43) ，we can not understand the present well．For example，if we wish to know how men (44) to use fire，we have to know what men did (45) the past to travel at night or to keep themselves (46) in cold nights．Only a study of history will make US realize(意识到) (47) everything we do today is the result of what (48) people did in the past．

[A] cool [B] hot [C] warm

As we (49) history，we learn many interesting (50) ．History helps US understand our present life better．