皮皮学，免费搜题
登录
搜题
【单选题】
人体内具有多项分化能力的最早的造血细胞是A.
红系祖细胞
B.
造血干细胞
C.
粒系祖细胞
D.
巨核系祖细胞
E.
T淋巴系祖细胞
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】The people of El Hierro ( ).
A.
need to buy all of their oil
B.
need to buy 30% of their oil
C.
don't need to buy any oil
【简答题】操纵基因(operator，operator gene，O)
【单选题】在某类的公共部分有声明string operator++()；和string operator++(int)；则说明
A.
string operator++()；是前置自增运算符声明
B.
string operator++()；是后置自增运算符声明
C.
string operator++(int)； 是前置自增运算符声明
D.
两条语句无区别
【单选题】The operator of electrical motors should keep a constant check on the loads they carry because _____.
A.
low loads necessitate frequent insulation cleaning
B.
exceeding nameplate values shortens useful life
C.
energy is wasted if full loading is not utilized
D.
power factor correction methods are load dependent
【单选题】The OR ( || ) operator _________.
A.
has higher precedence than the AND ( && ) operator
B.
stops evaluation upon finding one condition to be true
C.
associates from right to left
D.
is a ternary operator
相关题目：
参考解析：
知识点：
题目纠错 0
发布
