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【单选题】
—Oh, I've left my schoolbag in my classroom. —Don't worry. I'll _____ it for you. [     ]
A.
bring
B.
get
C.
take
D.
carry
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【简答题】Today women earn almost 60 percent of all bachelors degrees and more than half of s and Ph.D.s. Many people believe that, as this may be good for women as income earners, it【M1】______ foreshadow...
【判断题】电力二极管特别是快恢复二极管和肖特基二极管在中高频率整流和逆变,以及低压高频整流的场合大量应用。
A.
正确
B.
错误
【单选题】Today, you earn a salary of $36,000. What will be your annual salary twelve years from now if you earn annual raises of 3.6 percent?
A.
$55,032.54
B.
$57,414.06
C.
$58,235.24
D.
$59,122.08
E.
$59,360.45
【简答题】Firms must place raw materials, _____________ , and subassemblies in storage until they need those in the manufacturing process。
【判断题】肖特基二极管在正向恢复过程中不会有明显的电压过冲, 在反向耐压较低的情况下正向压降也很小,明显低于快速恢复二极管,因此,其开关损耗和正向导通损耗都很小。
A.
正确
B.
错误
【简答题】根据结构1处(作为一级标题)和2处填写正确标签(作为正文),只写标记字符,例如 h5 em del 不加边界符
【单选题】Today, you earn a salary of $36,000. What will be your annual salary twelve years from now if you earn annual raises of 3.6 percent?
A.
$55,032.54
B.
$57,414.06
C.
$58,235.24
D.
$59,122.08
【判断题】肖特基二极管与普通二极管相比可以在更高的频率下工作。(    )
A.
正确
B.
错误
【简答题】有下列物质①甲醛 ②陶瓷 ③碳酸氢铵 ④乙醇 ⑤熟石灰 ⑥硝酸钾六种物质,用序号填空 (1)常用来改良酸性土壤的是______(2)常用于浸制动物标本的是______ (3)在农业上是铵态氮肥的是______(4)可用来代替汽油作汽车燃料的是______ (5)属于无机非金属材料的是______(6)一般难与其它物质发生复分解反应的是______.
【判断题】肖特基二极管与普通二极管相比可以在更高的频率下工作。 ( )
A.
正确
B.
错误
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