某男，68岁。有糖尿病史多年，长期服用磺酰脲类降糖药，近日因血糖明显升高，口服降糖药控制不理想改用胰岛素，本次注射正规胰岛素后突然出现出汗、心悸、震颤，继而出现昏迷，此时应对该患者采取何种抢救措施

A．加用一次胰岛素
B．口服糖水
C．静脉注射50%葡萄糖
D．静脉注射糖皮质激素
E．心内注射肾上腺素

The irrevocable L/C can（）.

A．be amended or canceled without notice to the beneficiary

B．be amended or canceled if the buyer notifies the seller

C．neither be amended nor canceled without agreement of all parties

D．be amended but not be canceled by an applicant