重度营养不良,体重低于正常标准的比例是()
A.25%
B.30%
C.35%
D.40%
E.40%以上
参考答案:E
Lian Zhan, the Chairman of the KMT, enjoyed the scenery of the Huangpu River _______ the night of May 1st.
A.at
B.in
C.on
D.over
设PC中单字节带符号的整数是A=01001110,B=11100001,则A-B的结果是 ______。
A.01101101
B.00101111
C.10010001
D.00101101