可导致血小板减少的疾病有()
A.急性粒细胞白血病
B.原发性血小板减少性紫癜
C.再生障碍性贫血
D.真性红细胞增多症
E.过敏性紫癜
参考答案:A, B, C
在无线电信号书上,某海岸电台开放NBDP通信频率8430/8390,该频率应为().
A.8430/8390Hz
B.8430/8390Khz
C.8430/8390Mhz
D.8430/8390Ghz
Questions 11-14
A.He has a big family.
B. He has to work at home.
C.His mother-in-law likes to have parties.
D. His children are rather naughty.