大果型番茄种子的千粒重一般为()g。
A.0.1~0.8
B.1.1~1.7
C.2.7~3.3
D.6~7.3
参考答案:C
_____, water can be changed into gas.
A.Heated
B.Being heated
C.Having heated
D.Having been heated
二尖瓣关闭不全时可有()
A.心尖区全收缩期杂音,吸气时增强
B.心尖部全收缩期杂音,呼气时增强
C.心尖区第一心音亢进
D.心尖区全收缩期杂音,向主动脉瓣区传导
E.心尖区全收缩期杂音,向肺动脉瓣区传导