以肝脏合成能力为基础的实验室检查项目有()
A.血凝血酶原时间检测
B.血清胆红素测定
C.血清蛋白质测定
D.血氨测定
E.血清胆汁酸测定
参考答案:A, C
(4) 说明应该根据哪个指标比较两个项目的投资风险,并得出结论。
Spread spectrum simply means that data is sent in small pieces Over a number of the (46) frequencies available for use at any time in the specified range. Devices using (47) spread spectrum (DSSS) communicate by (48) each byte of data into several parts and sending them concurrently on different (49) . DSSS uses a lot of the available (50) , about 22 megahertz (MHz) .
(50)是()
A.rate
B.velocity
C.bandwidth
D.period