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【单选题】
破伤风梭菌的培养特性是A.
血平板上双层溶血
B.
血平板上无溶血
C.
血平板上可见薄膜状爬行生长物，β溶血
D.
厌氧，但不严格
E.
卵黄琼脂上可见Nagler反应
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皮皮学刷刷变学霸
举一反三
【单选题】Mr. White has two sons, and each of them has a sister. How many children does he have?
A.
one
B.
two
C.
three
D.
four
【单选题】He has two sons. They are Jim and Tom. Jim is Tom’s brother.
A.
old
B.
older
C.
elder
D.
young
【单选题】2 He has two sons, and _____ are college students.
A.
both of which
B.
both of whom
C.
both of them
D.
both of it
【单选题】Mr. White has two sons and each of them has a sister .how many children does he have ?
A.
one
B.
two
C.
three
D.
four
【单选题】Block group contains .
A.
connecting rods, crankshaft and flywheel
B.
pistons, connecting rods and oil pan
C.
cylinder block, cylinder head and oil pan
D.
piston rings, gasket and connecting rods
【单选题】He has two sons, and _____ are college students.
A.
both of which
B.
both of whom
C.
both of them
D.
both of it
【单选题】Block group contains______.
A.
connecting rod, crankshaft and flywheel
B.
pistons, connecting rods and oil pan
C.
cylinder block, cylinder head and oil pan
D.
piston rings, gasket and connecting rods
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