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【单选题】
下列有关内存储器于外存储器的说法,错误的是( )A.
内存储器可以被CPU直接访问,而外存储器不能
B.
RAM属于内存储器,硬盘属于外存储器
C.
内存储器中的信息断电后丢失,外存储器中的信息可以长期保存
D.
内存储器的主要性能指标是容量,外存储器的主要性能指标是存取速度
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反馈参考答案：
举一反三
【单选题】The only way to stop the spread of aerosols in the atmosphere,according to Dr Rasool and Dr Schneider, is to use（ ）.
A.
fossil fuels.
B.
electric power.
C.
nuclear energy.
D.
coal power.
【单选题】目前已知的生物毒素中毒性最强的是
A.
霍乱肠毒素
B.
白喉外毒素
C.
破伤风痉挛毒素
D.
肉毒毒素
E.
猩红热毒素
F.
: D
G.
程度:
H.
解析:
I.
:单选题
J.
、流行性斑疹伤寒的病原体是 K. 普氏立克次体 L. 恙虫病立克次体
【简答题】The distributor shall sell the products only to those retailers who under a written agreement with the distributor shall consent to resell the product only in the territory and only at the retail pric...
【单选题】The only way to solve the problem of office security was to put all important papers in the safe and allow only those present at the meeting to have the key to the safe．
A.
Right
B.
Wrong
C.
Doesn't say
【单选题】He hurried to the station the train had left.
A.
having been told
B.
telling
C.
only to be told
D.
only to tell
【简答题】What have the New England Journal warned doctors to do? [A] Give the pills only to the severely overweight persons. [B] Take the obese patients off the drugs completely. [C] Drop the prescriptions for...
【简答题】流体可压缩性小的,声速( ),很弱扰动波传播得快。
【单选题】I don't suppose you are serious,__________?
A.
aren't you
B.
don't I
C.
do I
D.
are you
【单选题】I don’t suppose you are working today,____?
A.
do I
B.
aren’t you
C.
are you
D.
don’t I
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