皮皮学，免费搜题
登录
搜题
【单选题】
天窗是指铁路列车运行图中,不铺画列车运行线而为施工和维修作业( )的时间。A.
预留
B.
增加
C.
撤销
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】阅读理解。 The year before the first modern Olympic s, Greece invited China to send a team. But the Qing government (政府) didn't send any athletes to the s. China did not take part in the Olympics u...
【简答题】项目要求: 1) 完成如下零件的三维实体设计; 2) 采用分层设计,草绘和实体放在合理的层; 3) 根据题目要求测得的数据填入相应位置; 4)prt 文件以附件形式上传 参照下图构建三维模型,其中未标注的厚度(或偏距)均为A。注意模型中的同心、对称等几何关系。请问模型的体积是多少? (输入答案时请精确到小数点后2位,注意采用正常数字表达方法,而不要采用科学计数法)。 请问模型体积为多少? A B ...
【单选题】听力原文：The modern Olympic Games began in Athens in 1896 as a result of the initiative of Baron Pierre de Coubertin, a French educator whose desire was to promote international understanding through athl...
A.
正确
B.
错误
【简答题】妊娠28周末：胎儿身长约_____cm；体重约_____g。
【简答题】阅读理解。 China is the first developing country to host the Olympic s in modern Olympic history. It hopes to learn from other countries that have held Olympic s. As well as new buildings, the gove...
【单选题】脑出血病人发生脑疝时,静脉滴注甘露醇应在多长时间内滴完
A.
15-20min
B.
15-35min
C.
15-40min
D.
15-30min
E.
15-60min
【单选题】The London 2012 Olympic Games marked the third time that London ______ the right to host the modern Olympic.
A.
had had
B.
has
C.
had
D.
has had
相关题目：