【判断题】在LM317典型应用电路中,输入电压20V,R1电阻取240KΩ,可调电阻R2取0KΩ,则LM317输出电压为1.25V。
【单选题】下列项目中,属于会计基本前提的是( )。
【单选题】每船应具有抛绳设备的抛射火箭和抛射药筒_____支。
【单选题】主要用于阴道、胃肠道及口腔真菌感染的药物是()
【单选题】下列哪个协议定义了无线局域网的介质访问方法与物理层规范____________。
【判断题】在LM317典型应用电路中,输入电压20V,R1电阻取3KΩ,可调电阻R2取30KΩ,则LM317输出电压为13.75V。
【单选题】What is the main idea of paragraph 2?
A.
The influences from parents to children's competence can be either positive or negative.
B.
Parents' beliefs and behaviors are strongly related to children's psychological and behavioral outcomes.
C.
Parents who give less pressuring can raise more competitive athletes.
D.
With the encouragement from parents, children can have inner motivations themselves.
【单选题】主要用于口腔、胃肠道及阴道真菌感染的药物是