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【单选题】
某个IP地址的子网掩码为255.255.255.224,该掩码又可以写为()。A.
/22
B.
/24
C.
/27
D.
/28
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反馈参考答案：
举一反三
【单选题】The room is in a terrible mess; it ____ cleane d.
A.
can't have been
B.
shouldn't have been
C.
mustn't have been
D.
wouldn't have been
【简答题】Parents are often upset when their children praise the homes of their friends and regard it as a slur on their own cooking, or cleaning, or furniture, and often are foolish enough to let the adolescen...
【单选题】For the Chinese, “No” sometimes doesn’t mean no. which is the best explanation of the above statement?
A.
A forced kindness deserves no thanks.
B.
When guests refuse to take, we often stop offering drinks and food.
C.
“No” means people don’t like to be pressed.
D.
“No” is a polite remark. If the host just brings the food or drink and ignores the “no”, people will still accept it.
【简答题】什么是必要约束?什么是多余约束?多余约束从哪个角度来看才是多余的?从以下四个结果中选一个，并说明原因。 A．从对体系的自由度是否有影响的角度看； B．从对体系的计算自由度是否有影响的角度看； C．从对体系的受力和变形状态是否有影响的角度看； D．从区分静定与超静定两类问题的角度看。
【简答题】请在笔记本上绘出“试题1-4用PLC控制双速交流异步电动机自动变速电路的设计、安装与调试”的地址分配表(I/O分配表),并在答案旁边写上学号姓名,然后拍照(照片中必须包含答案和个人姓名)提交于此题。
【单选题】关于子宫肌瘤，下列哪项错误：
A.
多见于中年妇女
B.
浆膜下肌瘤常无经量增多症状
C.
肌壁间肌瘤约占60%.～70%.
D.
玻璃样变为癌前病变
E.
红色变多发生在产褥期
【简答题】The room is in a terrible mess it _______ cleaned. A. can’t have been B. couldn’t be C. may have been D. would be
【单选题】关于子宫肌瘤的叙述，错误的是
A.
肌壁间肌瘤占60%
B.
肌瘤血供障碍可发生变性
C.
黏膜下肌瘤占15%～20%
D.
肌瘤变性中肉瘤变较常见
E.
浆膜下肌瘤占20%
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