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【单选题】

成年犬正常的心音频率约为( )次/分。

A.
30-50
B.
10-30
C.
120-180
D.
70-120
题目标签:成年犬音频频率
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参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】音频中的浊音是?

A.
で だ ば
B.
て ば だ
C.
た ば た
D.
で は ば

【单选题】[音频] question 12: What is the best thing about iPads according to the couple?

A.
They ma k e f or exce 11 ent entertamment.
B.
They are useful for the annual family vacat10n.
C.
They keep children at different age levels occupied.
D.
The y are helpful when going to the grocery store.

【单选题】成年犬的恒齿式为

A.
2(3142/3143)
B.
2(3243/3243)
C.
2(3133/3133)
D.
2(3143/3143)