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【单选题】
在三极管放大电路中,输入耦合电容是利用电容的无法比较()A.
滤波作用
B.
充、放电规律
C.
隔交通直特性
D.
隔直通交特性
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反馈参考答案：
举一反三
【简答题】挡土墙按结构形式不同可分为______、______、扶壁式、锚杆式及加筋式挡土墙等形式。
【单选题】The sultry weather in the tropics encourages a life of ______.
A.
comfort
B.
leisure
C.
indolence
D.
industry
【多选题】Which description shows how sultry（闷热的） the summer night is?
A.
There was no coolness after dark unless on the grass.
B.
Roads, garden-paths, the house-fronts, the barton-walls were warm as hearths.
C.
The buildings reflected the noontide temperature into the noctambulist’s face.
D.
The great trees, which had looked shrunken and bare in the earlier months, had now burst into strong life and health.
【单选题】The sultry weather in the tropics encourages a life of ________ according to some European researchers.
A.
impotence
B.
indolence
C.
cynicism
D.
caricature
【单选题】发现由氰酸和氨水制成的氰酸铵经加热会变成白色粉末-尿素的科学家是
A.
J.Berzelius
B.
F.Wohler
C.
M.Berthelot
D.
K.Schorlemmer
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