皮皮学，免费搜题
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【单选题】
( ) 已知某酶的 Km 值为 0.05mol.L -1 ,要使此酶所催化的反应速度达到最大反应速度的 50 %时底物的浓度应为多少?A.
0.2mol · L -1
B.
0.4mol · L -1
C.
0.1mol · L -1
D.
0.05mol · L -1
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皮皮学刷刷变学霸
举一反三
【多选题】教育目的的精神实质是（）
A.
培养劳动者是社会主义教育目的的总要求
B.
重视人文性是我国教育目的的根本特点
C.
坚持社会主义方向，是我国教育目的的根本特点
D.
要求德、智、体、美等方面全面发展是社会主义的教育质量标准
E.
培养“四有新人”是社会主义的教育质量标准
【简答题】Naturally, I 1._______________, but then I 2___________.
【单选题】The brake shoes, the wheel cylinder, the adjuster and emergency brake mechanism are mounted on a .
A.
brake disk
B.
brake drum
C.
brake caliper
D.
back plate
【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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