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【简答题】
影响产品价格的因素很复杂，主要包括（ ）。
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】下列离子选择性电极: a.氟电极; b.卤素电极; c.玻璃电极; d.钙电极; e.氨电极 (1)属于晶体膜电极的是 (2)属于硬质电极的是 ; (3)属于流动载体电极的是 ; (4)属于敏化电极的是 ;
A.
1 ab；2c；3d；4e
B.
1 a；2cb；3d；4e
C.
1 a；2b；3e；4d
D.
1 c；2b；3a；4d
【简答题】Compared with the old types, what advantage does the new machine have in power consumption? It can save ______ of the current of it.
【单选题】The old machine won't ______ properly if you don't oil it regularly.
A.
affect
B.
effect
C.
function
D.
practice
【单选题】After hours of repair, the driver tried to start the machine but it _________ work.
A.
won’t
B.
shouldn’t
C.
wouldn’t
D.
couldn’t
【单选题】Major Nelson Company is considering replacing a machine that is presently used in the production of its product. The following data are available: Replacement Old Machine Machine Origi...
A.
a. $22,000 in favor of keeping the old machine
B.
b. $12,000 in favor of keeping the old machine
C.
c. $37,000 in favor of replacing the old machine
D.
d. $22,000 in favor of replacing the old machine
【单选题】The old man often advised the young workers on _________the machine and they learned quickly. [ ]
A.
to operate
B.
how operate
C.
how operating
D.
how to operate
【判断题】为计算机安装杀毒软件,定期扫描系统、查杀病毒, 及时更新病毒库、更新系统补丁 ; 下载软件时尽量到官方网站或大型软件下载网站,在安装或打开来历不明的软件或文件前先杀毒; 不随意打开不明网页链接,尤其是不良网站的链接,陌生人通过QQ给自己传链接时,尽量不要打开。
A.
正确
B.
错误
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