集装箱起重机的载荷有效率是()的时间是空吊具运行的。
A、20%
B、30%
C、40%
D、50%
参考答案:D
30. He insisted on going abroad to have further study ____ his parents objection.
A.by means of
B.in favour of
C.regardless of
D.on purpose of
内存按字节编址,地址从0B4000H到0DBFFFH。至少需要 (1) 片存储容量为32K×8bit的存储器芯片构成该内存。
A.2
B.5
C.8
D.10