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【单选题】
L型变异的产生，是因为
A.
阻断了肽聚糖的合成
B.
阻断了磷壁酸的合成
C.
阻断了外膜的合成
D.
阻断了蛋白质的合成
E.
阻断了脂蛋白的合成
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参考答案：
举一反三
【单选题】西塞罗认为,雄辩家应具备()、礼让和同情的品质。
A.
勇敢
B.
善良
C.
爱国
D.
仁爱
查看完整题目与答案
【简答题】在建立射频识别系统时,要注意解决哪些问题。
查看完整题目与答案
【单选题】By the time Jack returned home from England, his son________from college. [      ]
A.
graduated
B.
has graduated
C.
had been graduating
D.
had graduated
查看完整题目与答案
【单选题】设a、b、c∈R ＋ ，P＝a＋b－c，Q＝b＋c－a，R＝c＋a－b，则“PQR>0”是“P、Q、R同时大于零”的 (　　 )
A.
充分而不必要条件
B.
必要而不充分条件
C.
充要条件
D.
既不充分也不必要条件
查看完整题目与答案
【单选题】有下列命题： ①设集合M={x|0＜x≤3}，N={x|0＜x≤2}，则“a∈M”是“a∈N”的充分而不必要条件； ②命题“若a∈M，则b?M”的逆否命题是：若b∈M，则a?M； ③若p∧q是假命题，则p，q都是假命题； ④命题P：“ ? x 0 ∈R， x 20 - x 0 -1＞0 ”的否定￢P：“?x∈R，x 2 -x-1≤0” 则上述命题中为真命题的是（　　）
A.
①②③④
B.
①③④
C.
②④
D.
②③④
查看完整题目与答案
【单选题】The author argues that the change to a nationwide banking systems should be ______.
A.
gradual, so that regional banks have a chance to compete with larger banks
B.
postponed, until the consequences can be evaluated
C.
immediate, because we cannot afford any more bark failures
D.
accelerated, to overcome legislative fear
查看完整题目与答案
【单选题】听力原文：College graduates should by all means hunt for a job. But they should first think over what they really want to get. (29)
A.
Only college graduates need to look for a job.
B.
No matter how difficult it is, college students should at least try twice to hunt for a job.
C.
College graduates should consider what they want to gain in the job.
D.
Once you get a job, you will feel superior to others.
查看完整题目与答案
【简答题】预裂爆破的作用原理是什么？有什么优点？
查看完整题目与答案
【单选题】By the time Jack returned home from England, his son _____ from college. [     ]
A.
graduated
B.
has graduated
C.
had been
D.
had graduated
查看完整题目与答案
【单选题】下列选项中，不属于建筑变形缝的是（ ）。
A.
伸缩缝
B.
后浇带
C.
沉降缝
D.
防震缝
查看完整题目与答案
相关题目：
【单选题】西塞罗认为,雄辩家应具备()、礼让和同情的品质。
A.
勇敢
B.
善良
C.
爱国
D.
仁爱
查看完整题目与答案
【简答题】在建立射频识别系统时,要注意解决哪些问题。
查看完整题目与答案
【单选题】By the time Jack returned home from England, his son________from college. [      ]
A.
graduated
B.
has graduated
C.
had been graduating
D.
had graduated
查看完整题目与答案
【单选题】设a、b、c∈R ＋ ，P＝a＋b－c，Q＝b＋c－a，R＝c＋a－b，则“PQR>0”是“P、Q、R同时大于零”的 (　　 )
A.
充分而不必要条件
B.
必要而不充分条件
C.
充要条件
D.
既不充分也不必要条件
查看完整题目与答案
【单选题】有下列命题： ①设集合M={x|0＜x≤3}，N={x|0＜x≤2}，则“a∈M”是“a∈N”的充分而不必要条件； ②命题“若a∈M，则b?M”的逆否命题是：若b∈M，则a?M； ③若p∧q是假命题，则p，q都是假命题； ④命题P：“ ? x 0 ∈R， x 20 - x 0 -1＞0 ”的否定￢P：“?x∈R，x 2 -x-1≤0” 则上述命题中为真命题的是（　　）
A.
①②③④
B.
①③④
C.
②④
D.
②③④
查看完整题目与答案
【单选题】The author argues that the change to a nationwide banking systems should be ______.
A.
gradual, so that regional banks have a chance to compete with larger banks
B.
postponed, until the consequences can be evaluated
C.
immediate, because we cannot afford any more bark failures
D.
accelerated, to overcome legislative fear
查看完整题目与答案
【单选题】听力原文：College graduates should by all means hunt for a job. But they should first think over what they really want to get. (29)
A.
Only college graduates need to look for a job.
B.
No matter how difficult it is, college students should at least try twice to hunt for a job.
C.
College graduates should consider what they want to gain in the job.
D.
Once you get a job, you will feel superior to others.
查看完整题目与答案
【简答题】预裂爆破的作用原理是什么？有什么优点？
查看完整题目与答案
【单选题】By the time Jack returned home from England, his son _____ from college. [     ]
A.
graduated
B.
has graduated
C.
had been
D.
had graduated
查看完整题目与答案
【单选题】下列选项中，不属于建筑变形缝的是（ ）。
A.
伸缩缝
B.
后浇带
C.
沉降缝
D.
防震缝
查看完整题目与答案
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