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【单选题】
The bandwidth of an amplifier is ( ).A.
the range of frequencies over which gain remains relatively constant
B.
the range of frequencies between the lower and upper 3 dB frequencies
C.
the range of frequencies found using
D.
All of the above
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【简答题】RIP v1与RIPv2的区别 (填写 “支持”或者 “不支持”) RIP v1() CIDR,()认证功能 RIP v2 ()CIDR ,() VLSM ,() 认证功能。
【单选题】There are only five minutes left before the train leavesYou should run______.
A.
fast as possible as you can
B.
as quickly as you can
C.
as fast as possible
D.
possible as fast as you can
【多选题】You’re hosting a dinner party at a restaurant. Included are two other couples, and your most valuable client and his wife. You instruct the waiter to:
A.
serve your spouse first
B.
serve your client’s spouse first
C.
serve you and your spouse last
【单选题】国务院决定由中国人民银行专门执行中央银行职能，从而结束了我国没有独立的中央银行制度的历史是在（ ）
A.
1949年
B.
1978年
C.
1983年
D.
1998年
【单选题】由受体介导的胞吞是一种特殊类型的胞吞作用,主要用于摄取特殊的生物大分子。其过程如图所示,下列有关叙述错误的是 ( )
A.
该过程以膜的流动性为基础
B.
由受 体介导的胞吞过程存在细胞识别并需要内部供能
C.
Na ＋ 、 K ＋ 等无机盐离子也可通过此方式运输
D.
该过程不能体现细胞膜的选择透过性
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