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【多选题】
IgG抗体的生物学特性有( )A.
能通过胎盘
B.
能结合补体
C.
能与肥大细胞结合
D.
能与NK细胞结合
E.
分子量最大
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反馈参考答案：
举一反三
【单选题】can be used to check the air leakage from the pip
A.
The lube oil
B.
The fuel oil
C.
The soap water
【单选题】Why does the speaker ask the questions?
A.
To check the students' understanding of the story.
B.
To draw the students' attention to reading skills.
C.
To let the students discuss father-son relationships.
D.
To motivate the students.
【单选题】Let`s check the operating condition of the echo sounder
A.
The speaker wants to check the gyro compass
B.
The speaker wants to check the magnetic compass
C.
The speaker wants to check the echo sounder
D.
The speaker wants to check the speed log
【单选题】Beowulf is a(n) _______, which was sung and passed by people in the past.
A.
song
B.
epic
C.
article
D.
novel
【单选题】Check the marks
A.
Please check if the cargo has the correct marks
B.
Please check if the cargo has the correct labels
C.
Please check if the cargo has the correct technical names
D.
Please check if the cargo has the correct segregation
【单选题】Let`s check the operating condition of the magnetic compass and the date of last calibration
A.
The speaker wants to check the gyro compass
B.
The speaker wants to check the magnetic compass
C.
The speaker wants to check the echo sounder
D.
The speaker wants to check the speed log
【简答题】大中型发酵罐罐体和封头采用整体焊接,罐内采用( )换热。
【单选题】强心苷类药物增强心肌收缩力的机制是
A.
兴奋心脏β1受体
B.
使心肌细胞内钙离子增加
C.
使心肌细胞内钾离子增加
D.
使心肌细胞内钠离子增加
E.
兴奋心脏M受体
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