患者女，21岁，因“消瘦、多饮2个月，咽痛、发热3d，意识不清4h”来诊。能最快获得

门脉高压的特异性表现是（）。

A.腹腔积液

B.脾大

C.脾功能亢进

D.侧支循环开放

E.肝掌，蜘蛛痣

根据旬意及首字母提示补全单词。

1.I think in 100 years, people will study on computers, not on p___________.

2.People don't need to work at home. We can buy a r__________ to help with all the housework.

3.Be careful. I don't think everyone can do e_______ well this time.

4.Look at that new b         over there. We'll soon move into it.

5.F       people write with their left hand than with their right, do they?

简述滑车组单头顺穿法的特点，并画出单头顺穿法简图。

若对下面Visual FoxPro代码段，进行判断覆盖测试，那么其测试用例的输入数据[考试用时，已用时间]为（）。

A.[120，110]，[120，115]

B.[120，20]，[120，105]

C.[120，30]，[120，20]

D.[120，105]，[150，135]

试述阀门的使用有哪些要求？