皮皮学，免费搜题
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搜题
【单选题】
I strained to hear what this mother was telling her child. Question: What does the sentence mean?A.
I tried very hard to hear what this mother was telling her child.
B.
I did not want to hear what this mother was telling her child.
C.
I was so sick that I could not hear what this mother was telling her child.
D.
I have lost my ability to hear.
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举一反三
【简答题】热处理是对固态金属或合金采用适当方式( )、保温和冷却,以获得所需要的( )的加工方法。
【多选题】在ZXSM（II）系统中，ZXSMPWCK单板为系统提供电源与系统时钟。时钟主要功能包括：（）.
A.
除NCP、OHP其他各槽位的19M/77M系统时钟。
B.
提供OHP槽位的2.048MHz的开销交叉时钟。
C.
提供2MBits/2MHz外部时钟的输入/输出。
D.
完成对输入时钟信号的锁定，相位平滑功能。
E.
为系统提供48V、+5V、5V电源。