搜题请搜索小程序“爱下问搜题”
问题 单项选择题

在轻度铅中毒的基础上具有下列一项表现者，可诊断为中度中毒

A．铅麻痹
B．铅脑病
C．血铅增高
D．腹绞痛
E．尿ALA增高

答案

参考答案：D

解析：在轻度铅中毒的基础上具有下列一项表现者，可诊断为中度中毒。①腹绞痛；②贫血；③中毒性周围神经病。

单项选择题

Currently the Pentium chip or (71) , made by (72) , is the most common CPU though there are many other companies that produce processors for personal computers. One example is the CPU made by Motorola which is used in Apple computers. With faster processors the clock speed becomes more important. Compared to some of the first computers which operated at below 30 megahertz ( (73) ) the Pentium chips began at 75 megahertz in the late 1990g. As of mid 2003 speeds now exceed 3000 + megahertz or 3 gigahertz (check your local computer store for the latest speed) . It depends on the (74) that the chip is housed in, or the (75) , as to whether you are able to upgrade to a faster chip. The motherboard contains the circuitry and connections that allow the various component to communicate with each other.

A. cycle boardB. circulate board C. circuit boardD. circle board
查看答案
填空题

轴压柱的柱脚中锚栓直径应()确定。
查看答案