“四合一”装置具有哪些功能?
参考答案:
具有以下功能:①遥测功能;②遥信功能;③遥控功能;④保护功能。
It was along the Mississippi River _____ Mark Twain spent much of his childhood. [ ]
A. how
B. which
C. that
D. where
多发性骨髓瘤属于()
A.浆细胞恶性肿瘤
B.单核细胞恶性肿瘤
C.Langerhans 细胞恶性肿痛
D.淋巴细胞恶性肿瘤
E.粒细胞恶性肿瘤