GPS卫星导航仪在（）时，需要初始化输入。A．日常启动 B．紧急启动 C．热启动 D

用益物权包括( )。

A．抵押权

B．建设用地使用权

C．地役权

D．宅基地使用权

E．土地承包经营权

不属于软骨连结的是（）

A.椎间盘

B.耻骨联合

C.幼儿期的蝶枕结合

D.椎弓间的黄韧带

E.第一肋与胸骨柄之间的连结

短文改错。

     This autumn my class went to Dalian to go the camping. We arrived at a sandy beach with a well view of the sea. We set up our tents on the sandy beach, when night fell we made a fire to give us light and kept us warm. All the classmates sat around them, talking and laughing. Several hours late, Li Mei and I went

back to the tent to have a chat. We stayed up all of night. We found that we two had a lot of common. For instance, we both like the same singers and have great enthusiasm for physics. The fire and the stars see

our happiness. What I wished time would stop at that moment!

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以下几方面描述中，不是PC机的主要性能指标的是

A．字长

B．CPU主频

C．内存容量

D．价格

压力释放阀根据释放阀（）选择安装法兰盘，安装时，压力释放阀底部密封圈与法兰盘光面对接。

A.材质

B.型号

C.大小

D.位置