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【简答题】
有一批半径为1cm的球,为了提高球表面的光洁度,要镀上一层厚度为0.01 cm的铜.已知铜的密度为8.9 g/cm 3 , 试估计一下每个球需用多少克铜?(精确到0.01)
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【简答题】我的父母无钱供我治疗。 My parents couldn't ______.
【单选题】某机字长32位,存储容量为2MB,若按字编址,它的寻址范围是( )。
A.
256K
B.
512K
C.
1024K
D.
2048K
【简答题】单词拼写。 1. At that time my parents couldn't afford the ______(船费) to the United States. 2. _______(不像) most people in the office, I don't come to work by car. 3. How long do you often spend _______(聊天) ...
【单选题】某计算机的字长为16位,它的存储容量为64KB,若按字寻址,其寻址范围是( )
A.
0~32KB
B.
0~32K-1
C.
0~64KB
D.
0~64K-1
【单选题】My parents couldn't get into the house last night because of them had the key.
A.
either
B.
all
C.
both
D.
neither
【单选题】My parents couldn't get into the house last night because of them has the key.
A.
either
B.
all
C.
both
D.
neither
【简答题】My parents couldn't afford to pay for my living ______, so I have to work part time. (expense /congratulate /association /resort /odd)
【单选题】My parents couldn't get into the house last night because _______ of them had the key. (2016)
A.
either
B.
all
C.
both
D.
neither
【单选题】某计算机字长为32位,其存储容量为16M×32位,它的地址线和数据线的总和是 ( )
A.
1 6
B.
3 2
C.
6 4
D.
5 6
【单选题】某男,62岁,进行性排尿困难,夜尿次数增多,直肠指诊发现前列腺明显增大,应首先考虑为( )。
A.
膀胱癌
B.
膀胱结石
C.
前列腺增生
D.
尿管狭窄
E.
膀胱结核
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