【单选题】女性患者32岁,近1年来月经周期缩短,月经量及经期无明显改变,妇科检查无异常,基础体温曲线呈双相型。最可能的诊断是
【判断题】检查电磁式凸轮轴传感器最好用万用表的交流电压档
【单选题】在李比希最小因子定律中,以下哪种情况对植物的产量起限制作用?
A.
某元素是植物生长的必需元素,供给量充足,但供给量在所有必需元素中最低
B.
某元素是植物生长的必需元素,但供给量不足,而且其供给量在所有必需元素中最低
C.
某元素是植物生长的必需元素,但供给量不足,而且其供给量接近其需求量的最低值
D.
某元素是植物生长的必需元素,供给量充足,但供给量在所有必需元素中最高
【简答题】A United Nations organization is working to help (1)_____ countries become active partners in the world (2) ________ . The UN Conference on Trade and Development says recent financial unrest shows the...
【简答题】A UN conference on arms reduction, which involves _________ and experts from more than a dozen countries, is ________ in Japan. On the agenda of the conference are ________ in NOrth Korea and Iran and...
【简答题】On February 12, 2010, British Prime Minister ____ took part in a video-conference with UN ____ Ban Ki-moon and Prime Minister Meles Zenawi of Ethiopia to launch a High Level Advisory Group on____.
【单选题】International environmental law has evolved over at least four distinct periods. The second period began with the creation of the UN in 1945 and _________with the UN Conference on the Human Environmen...
【判断题】水处理过程中,用显微镜进行活性污泥的观察,具有生物指示的作用。
【判断题】休闲养生的意义是人们在任何时间的放松活动,是人的生命放松愉快状态的一种修养形式,相对于生命意义来说,它是一种精神调节态度,是使自己沉浸在一种放松、愉悦、没有压力的一种状态。