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【单选题】
I型肺泡细胞最主要的作用是A.
分泌表面活性物质
B.
吞噬灰尘
C.
吞噬细菌
D.
是进行气体交换的部位
E.
稳定肺泡的大小
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】企业发生的下列支出中，按规定不可使用现金支付的有( )
A.
支付职工张添差旅费3000元
B.
支付银行承兑汇票手续费1000元
C.
支付李明困难补助800元
D.
支付购置设备款6000元
【单选题】—Have you finished your project, Alice? —I’m afraid I forgot about it.
A.
naturally
B.
probably
C.
extremely
D.
totally
【简答题】Naturally, I 1._______________, but then I 2___________.
【单选题】Naturally，after I told her what to d0，my daughter_____go and do the oppsite!
A.
may
B.
can
C.
must
D.
should
【单选题】The phrase 'ward it off naturally' (Paragraph 2) most probably means ______.
A.
dispose of it naturally.
B.
combat against it readily.
C.
attend to it reluctantly.
D.
split it up properly.
【单选题】I know how busy you must be and naturally I wouldn't want to ______ too much of your precious time. [ ]
A.
take off
B.
take up
C.
take down
D.
take out
【单选题】In both drum and disc brakes,_______ is used to connect the brake pedal to the brake parts at each wheel.
A.
a hydraulic control system
B.
brake assembly
C.
a starting system
D.
a braking system
【简答题】试根据新中国成立以来我国公布的教育目的，说明我国教育目的的精神实质是什么，应如何去实施教育目的。
【单选题】The brake shoes, the wheel cylinder, the adjuster and emergency brake mechanism are mounted on a ( ).
A.
brake disk
B.
brake caliper
C.
brake drum
D.
back plate
【单选题】Disk brake is consisted of a brake disk, two brake pads and a .
A.
wheel cylinder
B.
brake caliper
C.
back plate
D.
master cylinder
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