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【多选题】
下列灯具中,电光源属于热辐射工作原理的是______。A.
碘钨灯
B.
白炽灯
C.
高压汞灯
D.
日光灯
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】1-2. 假定盘块的大小为1 KB,对于1.2MB的软盘,FAT12需占用(1.8KB)的存储空间;对于100 MB的硬盘,FAT16 需占用(B)的存储空间。
A.
（1）100KB
B.
（2）150KB
C.
（3）200KB
D.
（4）250KB
E.
（5）300KB
【单选题】Researchers usually start with _____ when developing the research plan.
A.
primary data
B.
secondary data
C.
field research
D.
sales research
【单选题】假定盘块的大小为1KB,对于100MB的硬盘,FAT需要占用( )的存储空间。(这里FAT指FAT16不够用 <100K,又因FAT一般采用半个字节的方式增加,所以FAT表项长度为20)< /div>
A.
100KB
B.
150KB
C.
200KB
D.
250KB
【单选题】You promised to _____ the goods to our place immediately, but we haven't seen any of them yet. [ ]
A.
pass
B.
relay
C.
deliver
D.
release
【单选题】We promised them to be there by six. Now it’s six thirty already, and they _______ for us impatiently.
A.
wait
B.
had waited
C.
should wait
D.
must have waited
【单选题】Sellers promised to our orders if we could advise them of our requirements two weeks in advance.
A.
take priority to
B.
make priority of
C.
give priority to
D.
request priority of
【简答题】假定盘块的大小为 1 KB , 对于 1.2 MB 的软盘, FAT 需占用 ( 1 ) 的存储空间;对于 100 MB 的硬盘, FAT 需占用 ( 2 ) 的存储空间。
【简答题】Why do researchers usually quote other scholars in research design ?
【单选题】You promised to ______ the goods to our place immediately, but we haven't seen any of them yet. [ ]
A.
pass
B.
relay
C.
deliver
D.
provide
相关题目：
【单选题】假定盘块的大小为1KB,对于100MB的硬盘,FAT需要占用( )的存储空间。(这里FAT指FAT16不够用 <100K,又因FAT一般采用半个字节的方式增加,所以FAT表项长度为20)< /div>
A.
100KB
B.
150KB
C.
200KB
D.
250KB