某女,42岁, * * 肿块,界限不清,经前 * * 胀痛,应首先考虑()
A.乳疽
B.乳疬
C.乳腺增生病
D.乳岩
E.乳痨
参考答案:C
使用滑动变阻器改变电路中电流大小时,在闭合开关前,应把滑动变阻器的阻值调到最大,这时滑片P的位置在如图所示的各图中,正确的是:[ ]
A.
B.
C.
D.
The contract between a party who agrees to accept the risk and a party seeking protection from the risk a contract of_______
A.payment
B.production
C.shipment
D.insurance