诊断早期梅毒唯一快速、可靠的方法，尤其对已出现硬下疳而梅毒血清反应仍呈阴性者意义更大

一个自由下落的物体，到达地面的速度是30m/s，取g=10m/s²，则物体落到地面用了______s；这个物体开始下落的高度为______m．

Research studies show that there are some fundamental (1) between men and women in their attitudes to (2) matters. Women are far more likely to save for their children’s (3) and to save up to buy a (4) . Men tend to save for a (5) , and for their (6) . But in fact the need for women to save for their old age is far (7) than for men. Throughout the world, women are likely to live many years (8) than men. Furthermore it is the (9) women who will most often have to look after the children and thus they need more (10) to look after not just themselves but others. Women today need to look ahead, think ahead, not wait until they’re under (11) .
A number of (12) have been set up to help them do this. Some educational institutions offer night (13) in Money (14) . They can be given (15) on different ways of saving. It is usually advised that at least (16) of a person’s savings should be in low-risk investments but for the rest, (17) advisors often advise taking some (18) risks. Initiatives such as this can give women the economic (19) and knowledge they need for a comfortable, (20) retirement.

两波相干，有明显效果时，两者频率需满足什么样的关系？（）

A、相等

B、差别不大

C、差别较大

D、没有关系

恶性高热是一种较为罕见的疾病，是由氟烷等挥发性麻醉药物所触发的一种骨骼肌异常高代谢状态，病情危重，常危及生命。恶性高热易感者的骨骼肌细胞膜有缺陷，导致由5000多个氨基酸组成的钙离子通道蛋白RYR₁结构异常，在诱发药物氟烷等挥发性麻醉药物的作用下，该钙离子通道持续开放，钙离子持续大量外流，使全身肌肉痉挛，产热急剧增加，体温迅速升高，在没有特定治疗药物的情况下，一般的临床降温措施难以控制体温的升高。同时产生大量乳酸和CO₂，出现酸中毒、低氧血症、高血钾、心律失常等一系列变化，最终可导致死亡。

恶性高热的病因说明基因可通过控制（）直接控制生物体的性状。

如图1所示，在某DHCP客户机上捕获了5条报文，表中对第5条报文进行了解析，图2是在该客户机捕获上述报文后执行ipconfig/all命令后得到的信息。分析捕获的报文，并补全图中的信息。

图1 在DHCP客户机上捕获的IP报文及相关分析

图2 在DHCP客户机执行ipconfig/all获得的信息

（1）处填（）