主页
学科
搜索
账户
常见问题
当前学科：百科知识竞赛
题目：
判断题
世界上国土面积最小的国家是梵蒂冈。（）
A
对
B
错
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
急性化脓性骨髓炎X线平片，最早出现骨质破坏的时间是起病后的：（）
比较编译方式和解释方式的优缺点。
蜗杆传动的传动比可达（）。
世界贸易组织部长级会议闭会期间，其职能由( )代理行便。A. 总理事会B. 秘书处C. 总干事D. 专门委员会
叙述治疗小儿外感发热的推拿方法。
Technology surrounds us and is a part of our daily lives. We can find technological innovations at home , our workplaces , our schools , and our playgrounds. (1)________technology has improved our lives in some ways , it has also brought many negative(2)________.Modern technology has made life very (3) ________. We have everything we need and our inventions take care of so many unpleasant details in our day-to-day lives. Foods from all over the world are available at local supermarkets. International travel is now fast and easy. We can talk to friends on cell phones any time. anywhere. and we can catch a TV show from many countries far away.(4)________. these conveniences have a price. We consume too much energy and too many resources , and we create too much waste. The world is overflowing with pollution and waste. We cannot continue like this forever. We should be more responsible about protecting our world while still enjoying conveniences. (5)________our natural world is destroyed. The conveniences will be useless.
由热力学第二定律可知，实际循环的热效率总是（）。
如果一天之内访视多个家庭，其优先顺序为：新生儿或免疫缺陷者；病情较重者；一般访视对象；有传染性或感染性疾病者。
某月经周期正常且规律的孕妇，目前怀孕36周，孕期进展顺利，她的胎儿的情况大致是。体重可达到（）。
氩弧焊、等离子弧焊的温度越高，产生的紫外线波长越短。