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【单选题】
以下样品中可直接取样或稀释即可测定总酸度的是( )A.
可乐
B.
奶粉
C.
食盐
D.
食醋
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举一反三
【单选题】It was ______Saturday when we decided to see ________ film. But it was not as good as I had been told.
A.
a; /
B.
/; the
C.
a; the
D.
/; a
【单选题】In which microorganism the lipids in their cells wall are dissolved and allow the crystal violet-iodine complex to escape?
A.
gram-positive microorganism
B.
gram-negative microorganism
C.
neither A nor B
D.
both A and B
【单选题】Which statement is not right about Staphylococcus aureus ?
A.
Gram positive coccus ,
B.
It produces b - lactamase as mechanism for penicillin-resistance .
C.
It has O-Ag in its cell wall
D.
It produces Hyaluronidase to break down hyaluronic acid, enabling the bacteria to spread between cells.
【单选题】A 60-year-old alcoholic woman presents to the emergency room with fever, chills, and shortness of breath. The sputum is rusty-yellow and contains numerous neutrophils, red blood cells, and Gram-positi...
A.
(A) Blood
B.
(B) Bronchi
C.
(C) Interstitial space
D.
(D) Pericardium
E.
(E) Pleural space
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