主页
学科
搜索
账户
常见问题
当前学科:超声医学
题目:
单选
自然组织谐波的作用是()。
A . 增加可视帧频
B . 增加界面分辨力及清晰度
C . 增加高频超声的穿透深度
D . 提高声输出功率
E . 减少超声的衰减
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:
γ射线是怎样产生的?
对于Application,主线程是main()方法执行的线索;对于Applet,主线程是浏览器加载并执行Java小程序。()A.正确B.错误
塔板上开始出现液泛的气速称()。
儿童,特别是学前儿童,无法从他人的观点出发看问题。这被皮亚杰称为()。
A: Shall we begin to discuss the terms of insurance right now? B: OK. A: We have a deal on CIF price.It means that the insurance should be borne by you, right? B: Certainly.The premium should be paid by us.All our export goods sold on CIF terms arc insured with the PICC.They provide many kinds of coverages of marine insurance, such as F.P.A., W.P.A., A.R.and so on. A: What kind of coverage will you arrange for our order then? B: Usually we']] only insure W.P.A.for this kind. A: We hope you can cover the Packing Breakage Risk for us. B: We can do that for you.But additional premium should be on your account. A.We will pay that.So, please insure the consignment against W.P.A.and Packing Breakage Risk for 150% of invoice value. B: I am sorry, we only can insure goods for 110% of the invoice value.For 150% , the extra premium will be borne by you. A: Then we made a deal that we will insure this consignment against W.P.A.and Packing Breakage Risk for 150% of invoice value.Is there anything else about the insurance clause? B: I don't think so.
通气功能衰竭诊断标准为()
某课题的中心词是“杜鲁门主义”、“欧洲一体化”、“日本崛起”、“中国振兴”、“苏联解体”。由此推断,该课题的中心内容最有可能是()。
泵的轴向软填料密封系统是由()、()和()等组成,以防进气或大量漏水。
阿米巴病排包囊者用()
进行复式记账时,对任何一项经济业务登记的账户数量应是()。