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【判断题】
在时间和幅值上连续的信号称为数字信号。A.
正确
B.
错误
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举一反三
【单选题】Our neighbours will (pay attentio to) (loof after) our house when we are away.
A.
pay attentio to
B.
l loof after
C.
\
D.
/
【简答题】If you want to be a great player, it takes ___ effort.
【单选题】If you want to get the industry's best online privacy, you need to _______.
A.
sign a contract
B.
pay a small fee
C.
ask for permission
D.
register a new account
【单选题】The chemistry teacher required the students to pay more attention ________ the lab clean. A . to keep B . to keeping C . keeping
A.
to keep
B.
to keeping
C.
keeping
【单选题】The shortage of supplies is________the price.
A.
keeping off
B.
keeping out
C.
keeping up
D.
keeping from
【单选题】男性,24岁,因触电致心跳、呼吸骤停。胸外心脏按压操作不正确的是
A.
按压部位在胸骨中下段
B.
双手掌根相叠小指扣挤压
C.
每次按压胸骨下陷至少5cm
D.
每分钟至少按压100次
E.
与人工呼吸配合的比率为15:2.
【单选题】If you want to download this app, you need to connect your mobile phone _______ Internet first.
A.
to
B.
for
C.
with
【单选题】If you want to apply for the scholarship, you have to_______this form.
A.
casually
B.
come across
C.
fill out
D.
gave … a … look
E.
in....thirties
F.
couldn’t help
G.
short for
H.
open to
I.
let out
J.
all about his age
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