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【单选题】
在表面制片过程中,用刀片切取表皮面积大小约为( )
A.
2mm 2
B.
3mm 2
C.
4mm 2
D.
5mm 2
E.
6mm 2
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参考答案:
举一反三
【单选题】关于n个串联电阻电路的特性描述,下列说法错误的是( )。
A.
串联电路端口的总电压为各个电阻上的电压相加
B.
各个串联电阻上的电流为同一电流
C.
串联电阻中阻值大的电阻分到的电压大
D.
n个串联电阻的等效电阻为各个串联电阻之和
【单选题】人参百合猪肺汤 食疗功效的是
A.
补气润肺
B.
补血 安神
C.
温补肾阳
D.
清肝明目
【单选题】听力原文:W: I'd like to mail this package to Minneapolis. M: How would you like to send it? W: By express, please. M: OK. Let's see. It's twelve pounds, so that'll be ten dollars and eighty-one cents. W: ...
A.
$12.
B.
$10.18.
C.
$5.94.
D.
$10. 81.
【单选题】听力原文:W: I'd like to mail this package to Minneapolis. M: How would you like to send it? W: By express, please. M: OK. Let's see. It's twelve pounds, so that'll be ten dollars and eighty-one cents. W: ...
A.
$12.
B.
$10.18.
C.
$5.94.
D.
$10.81.
【单选题】听力原文:W: I'd like to mail this package to Minneapolis. M: How would you like to send it? W: By express, please. M: OK. Let's see. It's twelve pounds, so that'll be ten dollars and eighty-one cents. W: ...
A.
$12.
B.
$10.18.
C.
$5.94.
D.
$10.81.
【单选题】— _____ delicious the food is! Would you like _______? — No, thanks. I'm very full. [     ]
A.
How, one more
B.
What, a few more
C.
How, some more
D.
What, some more.
【单选题】听力原文:M: I'd like to mail this package to Minneapolis. W: How would you like to send it? M: By express, please. W: OK. Let's see. It's twelve pounds, so that will be ten dollars and eighty-one cents. M...
A.
$ 12.
B.
$10.18.
C.
$ 5.94.
D.
$10.81.
【多选题】在RLC串联电路中,出现串联谐阵时,电路特性正确的是:( )。
A.
XL=XC
B.
U=UC
C.
电流最大
D.
电流最小
【多选题】串联电路具有( )特性。
A.
串联电路中,不论电压源或电阻如何变化,流经各个负载的电流均相同。
B.
串联电路中,电路负载连接越多,对总电流而言,其流通的面积将增大,电流越大
C.
串联电路中,如有任何一个负载断路,则整个电路便不再有电流流过,所有负载的电流皆等于零。
D.
串联电路负载连接越多,电路的电阻也越大,电阻串联后的等效电阻等于各个电阻的总和。
【多选题】RLC串联电路 谐振特性有哪些?
A.
电路呈电阻性
B.
电路电压与电流相位相同
C.
电路阻抗的模最小
D.
电路电流达到最大值
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