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【单选题】
苷减慢房颤时的心室率主要是由于A.
减少房室结中的隐匿性传导
B.
降低心房自律性
C.
增加房室结中的隐匿性传导
D.
降低心室自律性
E.
降低结自律性
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反馈参考答案：
举一反三
【简答题】我国元代数学著作《四元玉鉴》的作者是( )
【单选题】The government is asked to improve school bus safety, ______ ? [ ]
A.
didn't it
B.
hasn't it
C.
isn't it
D.
doesn't it
【单选题】A “stopper” is（）.
A.
a short length of line used for temporarily holding another line
B.
a snatch block for handling a topping lift
C.
an engine order telegraph
D.
the brake on a cargo winch
【单选题】The main advantage of a Chinese stopper over the one line stopper is that it ______.
A.
will not jam on the mooring line
B.
is stronger
C.
is easier to use when under heavy tension
D.
is safer to use when under heavy tension
【单选题】The safety stopper that prevents the anchor cable from running free if the cable jumps the wildcat is the ______.
A.
riding pawl
B.
devil's claw
C.
buckler plate
D.
spill pipe
【简答题】练习 2 马克离家出走后,一家人都在焦急寻找,当凯特问邻居蒂娜,马克有没有在她家时,蒂娜对凯特说 “ I always knew one of your kids would land on a milk carton. ”请说说你对这句话的理解。
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