投标报价应包括招标文件要求的所有费用，包括( )。
A．工程成本
B．利润
C．保险
D．风险金
E．投标费用
参考答案：A,B,C,E
____twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
A．Examining
B．Examined
C．Being examined
D．Having been examined
血小板对人体的保护功能主要有哪些()
A．促进生理止血
B．参与血液凝固
C．维持血管内皮的完整
D．血小板再造
E．血小板解体
