下列杂交或自交实验中，子一代能出现性状分离的是（） A: ADD×dd B: Bdd×dd C: CDD×DD D: DDd×Dd

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2022-06-09 问题

下列杂交或自交实验中，子一代能出现性状分离的是（） A: ADD×dd B: Bdd×dd C: CDD×DD D: DDd×Dd

2022-06-01 问题

父亲的基因型是DD，母亲的基因型是dd，子代的基因型是（） A: ADD B: BDd C: Cdd D: DDD或dd

2022-06-25 问题

vim中要删除一行的快捷键是() A: d B: dd C: ddd D: pp

2022-06-09 问题

下列杂交或自交实验中，子一代能出现性状分离的是（） A: DD×dd B: dd×dd C: DD×DD D: Dd×Dd

2022-06-01 问题

父亲的基因型是DD，母亲的基因型是dd，子代的基因型是（） A: DD B: Dd C: dd D: DD或dd

2022-06-08 问题

下列选项中,能够一次性向student表中添加三条记录的SQL语句是 A: INSERT INTO student VALUES (6,'lilei',99);(7,'hanmeimei',100);(8,'poly',40.5); B: INSERT INTO student VALUES (6,'lilei',99) (7,'hanmeimei',100) (8,'poly',40.5); C: INSERT INTO student VALUES (6,'lilei',99),(7,'hanmeimei',100),(8,'poly',40.5); D: INSERT INTO student VALUES (6,'lilei',99) VALUES(7,'hanmeimei',100) VALUES(8,'poly',40.5);

下列选项中,能够一次性向student表中添加三条记录的SQL语句是 A: INSERT INTO student VALUES (6,'lilei',99);(7,'hanmeimei',100);(8,'poly',40.5); B: INSERT INTO student VALUES (6,'lilei',99) (7,'hanmeimei',100) (8,'poly',40.5); C: INSERT INTO student VALUES (6,'lilei',99),(7,'hanmeimei',100),(8,'poly',40.5); D: INSERT INTO student VALUES (6,'lilei',99) VALUES(7,'hanmeimei',100) VALUES(8,'poly',40.5);

2022-06-06 问题

If Sarah hadn’t come to the cabin, （） A: Abe’s father wouldn’t have told him not to go to school B: Abe wouldn’t have helped his father on the farm C: Abe wouldn’t have had so much time to read D: Abe’s father wouldn’t have told him to stop reading

If Sarah hadn’t come to the cabin, （） A: Abe’s father wouldn’t have told him not to go to school B: Abe wouldn’t have helped his father on the farm C: Abe wouldn’t have had so much time to read D: Abe’s father wouldn’t have told him to stop reading

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