多项选择题
以完整叶片为插穗,依扦插位置分为 A. 平置法 B. 倒置法 C. 直插法。 D. 斜插法
以完整叶片为插穗,依扦插位置分为 A. 平置法 B. 倒置法 C. 直插法。 D. 斜插法
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单项选择题
The average time between two high waters is 12 hours and 25 minutes because this is the time it takes for ______.
The average time between two high waters is 12 hours and 25 minutes because this is the time it takes for ______.
A.A. The sun to be at the opposite side of the moon
B.B. The moon to be at the opposite side of the earth
C.C. The moon to be at its apogee
D.D. The sun and the moon to be on the same side